To compare the values \(4 \times 10^7\) and \(4 \times 10^3\), you can divide the first value by the second value:
\[ \frac{4 \times 10^7}{4 \times 10^3} = \frac{4}{4} \times \frac{10^7}{10^3} = 1 \times 10^{7 - 3} = 10^4 \]
Calculating \(10^4\):
\[ 10^4 = 10000 \]
So, \(4 \times 10^7\) is 10,000 times as much as \(4 \times 10^3\).
The complete statement is:
4x10^7 is 10,000 times as much as 4x10^3.