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Finding the Fourth Proportional to 629,428.86, 868,600.89 and 342,951.30

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Solution

The fourth proportional to 629,428.86, 868,600.89 and 342,951.30 is: 473,266.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,428.86 : 868,600.89 = 342,951.30 : x
  2. Step 2: Convert to fraction form
    629,428.86/868,600.89 = 342,951.30/x
  3. Step 3: Cross multiply
    629,428.86x = 868,600.89 × 342,951.30
  4. Step 4: Simplify right side
    629,428.86x = 297,887,804,406.66
  5. Step 5: Solve for x
    x = 297,887,804,406.66/629,428.86
  6. Step 6: Final answer
    x = 473,266.83

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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.