Step 1:
The first step to converting 378009.639807 to a fraction is to re-write 378009.639807 in the form p/q where p and q are both positive integers. To start with, 378009.639807 can be written as simply 378009.639807/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 378009.639807, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 378009.639807/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 378009.639807/1 each by 1000000:
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 378009.639807 as a fraction:
378010/1 / 1