Finding the Fourth Proportional to 1,120,128, 1,545,893.28 and 690,397.08
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Solution
The fourth proportional to 1,120,128, 1,545,893.28 and 690,397.08 is: 952,819.86
Step by Step Solution
- Step 1: Write the proportion equation
1,120,128 : 1,545,893.28 = 690,397.08 : x - Step 2: Convert to fraction form
1,120,128/1,545,893.28 = 690,397.08/x - Step 3: Cross multiply
1,120,128x = 1,545,893.28 × 690,397.08 - Step 4: Simplify right side
1,120,128x = 1,067,280,206,503.62 - Step 5: Solve for x
x = 1,067,280,206,503.62/1,120,128 - Step 6: Final answer
x = 952,819.86
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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.