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Finding the Fourth Proportional to 642,656.61, 885,843.03 and 506,472.12

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Solution

The fourth proportional to 642,656.61, 885,843.03 and 506,472.12 is: 698,125.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,656.61 : 885,843.03 = 506,472.12 : x
  2. Step 2: Convert to fraction form
    642,656.61/885,843.03 = 506,472.12/x
  3. Step 3: Cross multiply
    642,656.61x = 885,843.03 × 506,472.12
  4. Step 4: Simplify right side
    642,656.61x = 448,654,797,391.32
  5. Step 5: Solve for x
    x = 448,654,797,391.32/642,656.61
  6. Step 6: Final answer
    x = 698,125.24

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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.