Step 1:
The first step to converting 278980.7915645 to a fraction is to re-write 278980.7915645 in the form p/q where p and q are both positive integers. To start with, 278980.7915645 can be written as simply 278980.7915645/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 278980.7915645, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 278980.7915645/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 278980.7915645/1 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 278980.7915645 as a fraction:
278981/1 / 1