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Finding the Fourth Proportional to 629,288.90, 868,414.18 and 342,808.92

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Solution

The fourth proportional to 629,288.90, 868,414.18 and 342,808.92 is: 473,073.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,288.90 : 868,414.18 = 342,808.92 : x
  2. Step 2: Convert to fraction form
    629,288.90/868,414.18 = 342,808.92/x
  3. Step 3: Cross multiply
    629,288.90x = 868,414.18 × 342,808.92
  4. Step 4: Simplify right side
    629,288.90x = 297,700,127,158.49
  5. Step 5: Solve for x
    x = 297,700,127,158.49/629,288.90
  6. Step 6: Final answer
    x = 473,073.86

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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.