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Finding the Fourth Proportional to 641,758.56, 958,737.54 and 415,273.92

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Solution

The fourth proportional to 641,758.56, 958,737.54 and 415,273.92 is: 620,387.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,758.56 : 958,737.54 = 415,273.92 : x
  2. Step 2: Convert to fraction form
    641,758.56/958,737.54 = 415,273.92/x
  3. Step 3: Cross multiply
    641,758.56x = 958,737.54 × 415,273.92
  4. Step 4: Simplify right side
    641,758.56x = 398,138,696,486.96
  5. Step 5: Solve for x
    x = 398,138,696,486.96/641,758.56
  6. Step 6: Final answer
    x = 620,387.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.