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Finding the Fourth Proportional to 681,711.91, 940,720.14 and 375,772.48

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Solution

The fourth proportional to 681,711.91, 940,720.14 and 375,772.48 is: 518,542.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,711.91 : 940,720.14 = 375,772.48 : x
  2. Step 2: Convert to fraction form
    681,711.91/940,720.14 = 375,772.48/x
  3. Step 3: Cross multiply
    681,711.91x = 940,720.14 × 375,772.48
  4. Step 4: Simplify right side
    681,711.91x = 353,496,737,641.95
  5. Step 5: Solve for x
    x = 353,496,737,641.95/681,711.91
  6. Step 6: Final answer
    x = 518,542.71

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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.