Finding the Fourth Proportional to 1,173,072.80, 1,618,859.28 and 636,528.80
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Solution
The fourth proportional to 1,173,072.80, 1,618,859.28 and 636,528.80 is: 878,419.95
Step by Step Solution
- Step 1: Write the proportion equation
1,173,072.80 : 1,618,859.28 = 636,528.80 : x - Step 2: Convert to fraction form
1,173,072.80/1,618,859.28 = 636,528.80/x - Step 3: Cross multiply
1,173,072.80x = 1,618,859.28 × 636,528.80 - Step 4: Simplify right side
1,173,072.80x = 1,030,450,554,867.26 - Step 5: Solve for x
x = 1,030,450,554,867.26/1,173,072.80 - Step 6: Final answer
x = 878,419.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.