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\frac{1}{100}\sqrt{\frac{400}{400000}}x\times 100=1
Reduce the fraction \frac{47}{4700} to lowest terms by extracting and canceling out 47.
\frac{1}{100}\sqrt{\frac{1}{1000}}x\times 100=1
Reduce the fraction \frac{400}{400000} to lowest terms by extracting and canceling out 400.
\frac{1}{100}\times \frac{\sqrt{1}}{\sqrt{1000}}x\times 100=1
Rewrite the square root of the division \sqrt{\frac{1}{1000}} as the division of square roots \frac{\sqrt{1}}{\sqrt{1000}}.
\frac{1}{100}\times \frac{1}{\sqrt{1000}}x\times 100=1
Calculate the square root of 1 and get 1.
\frac{1}{100}\times \frac{1}{10\sqrt{10}}x\times 100=1
Factor 1000=10^{2}\times 10. Rewrite the square root of the product \sqrt{10^{2}\times 10} as the product of square roots \sqrt{10^{2}}\sqrt{10}. Take the square root of 10^{2}.
\frac{1}{100}\times \frac{\sqrt{10}}{10\left(\sqrt{10}\right)^{2}}x\times 100=1
Rationalize the denominator of \frac{1}{10\sqrt{10}} by multiplying numerator and denominator by \sqrt{10}.
\frac{1}{100}\times \frac{\sqrt{10}}{10\times 10}x\times 100=1
The square of \sqrt{10} is 10.
\frac{1}{100}\times \frac{\sqrt{10}}{100}x\times 100=1
Multiply 10 and 10 to get 100.
\frac{\sqrt{10}}{100}x=1
Cancel out 100 and 100.
\frac{\sqrt{10}x}{100}=1
Express \frac{\sqrt{10}}{100}x as a single fraction.
\sqrt{10}x=100
Multiply both sides by 100.
\frac{\sqrt{10}x}{\sqrt{10}}=\frac{100}{\sqrt{10}}
Divide both sides by \sqrt{10}.
x=\frac{100}{\sqrt{10}}
Dividing by \sqrt{10} undoes the multiplication by \sqrt{10}.
x=10\sqrt{10}
Divide 100 by \sqrt{10}.