Step 1:
The first step to converting 386408.87107316 to a fraction is to re-write 386408.87107316 in the form p/q where p and q are both positive integers. To start with, 386408.87107316 can be written as simply 386408.87107316/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 386408.87107316, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 386408.87107316/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 386408.87107316/1 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 386408.87107316 as a fraction:
386409/1 / 1