Step 1:
The first step to converting 397474.9801207 to a fraction is to re-write 397474.9801207 in the form p/q where p and q are both positive integers. To start with, 397474.9801207 can be written as simply 397474.9801207/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 397474.9801207, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 397474.9801207/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 397474.9801207/1 each by 10000000:
Step 3:
Now the last step is to simplify the fraction (if possible) by finding similar factors and cancelling them out, which leads to the following answer for 397474.9801207 as a fraction:
397475/1 / 1