Step 1:
The first step to converting 389216648.72769 to a fraction is to re-write 389216648.72769 in the form p/q where p and q are both positive integers. To start with, 389216648.72769 can be written as simply 389216648.72769/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 389216648.72769, which in this case is 5. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 389216648.72769/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 389216648.72769/1 each by 100000:
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 389216648.72769 as a fraction:
389216648/1 / 1