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Finding the Fourth Proportional to 627,560.64, 865,920.96 and 372,974.40

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Solution

The fourth proportional to 627,560.64, 865,920.96 and 372,974.40 is: 514,637.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,560.64 : 865,920.96 = 372,974.40 : x
  2. Step 2: Convert to fraction form
    627,560.64/865,920.96 = 372,974.40/x
  3. Step 3: Cross multiply
    627,560.64x = 865,920.96 × 372,974.40
  4. Step 4: Simplify right side
    627,560.64x = 322,966,350,503.42
  5. Step 5: Solve for x
    x = 322,966,350,503.42/627,560.64
  6. Step 6: Final answer
    x = 514,637.68

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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.