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Finding the Fourth Proportional to 627,680, 940,989.30 and 272,426.96

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Solution

The fourth proportional to 627,680, 940,989.30 and 272,426.96 is: 408,410.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,680 : 940,989.30 = 272,426.96 : x
  2. Step 2: Convert to fraction form
    627,680/940,989.30 = 272,426.96/x
  3. Step 3: Cross multiply
    627,680x = 940,989.30 × 272,426.96
  4. Step 4: Simplify right side
    627,680x = 256,350,854,391.53
  5. Step 5: Solve for x
    x = 256,350,854,391.53/627,680
  6. Step 6: Final answer
    x = 408,410.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.