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Finding the Fourth Proportional to 626,423.15, 864,463.92 and 339,943.24

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Solution

The fourth proportional to 626,423.15, 864,463.92 and 339,943.24 is: 469,121.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,423.15 : 864,463.92 = 339,943.24 : x
  2. Step 2: Convert to fraction form
    626,423.15/864,463.92 = 339,943.24/x
  3. Step 3: Cross multiply
    626,423.15x = 864,463.92 × 339,943.24
  4. Step 4: Simplify right side
    626,423.15x = 293,868,665,633.69
  5. Step 5: Solve for x
    x = 293,868,665,633.69/626,423.15
  6. Step 6: Final answer
    x = 469,121.65

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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.