Step 1:
The first step to converting 390399.40771622 to a fraction is to re-write 390399.40771622 in the form p/q where p and q are both positive integers. To start with, 390399.40771622 can be written as simply 390399.40771622/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 390399.40771622, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 390399.40771622/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 390399.40771622/1 each by 100000000:
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 390399.40771622 as a fraction:
780799/2 / 1