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Finding the Fourth Proportional to 619,397.39, 928,468.61 and 419,737.97

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Solution

The fourth proportional to 619,397.39, 928,468.61 and 419,737.97 is: 629,181.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,397.39 : 928,468.61 = 419,737.97 : x
  2. Step 2: Convert to fraction form
    619,397.39/928,468.61 = 419,737.97/x
  3. Step 3: Cross multiply
    619,397.39x = 928,468.61 × 419,737.97
  4. Step 4: Simplify right side
    619,397.39x = 389,713,527,471.43
  5. Step 5: Solve for x
    x = 389,713,527,471.43/619,397.39
  6. Step 6: Final answer
    x = 629,181.74

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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.