Finding the Fourth Proportional to 1,125,476.98, 1,553,013.61 and 642,013.29
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Solution
The fourth proportional to 1,125,476.98, 1,553,013.61 and 642,013.29 is: 885,895.84
Step by Step Solution
- Step 1: Write the proportion equation
1,125,476.98 : 1,553,013.61 = 642,013.29 : x - Step 2: Convert to fraction form
1,125,476.98/1,553,013.61 = 642,013.29/x - Step 3: Cross multiply
1,125,476.98x = 1,553,013.61 × 642,013.29 - Step 4: Simplify right side
1,125,476.98x = 997,055,375,565.84 - Step 5: Solve for x
x = 997,055,375,565.84/1,125,476.98 - Step 6: Final answer
x = 885,895.84
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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.