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Finding the Fourth Proportional to 626,411.84, 864,450.60 and 339,931.85

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Solution

The fourth proportional to 626,411.84, 864,450.60 and 339,931.85 is: 469,107.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,411.84 : 864,450.60 = 339,931.85 : x
  2. Step 2: Convert to fraction form
    626,411.84/864,450.60 = 339,931.85/x
  3. Step 3: Cross multiply
    626,411.84x = 864,450.60 × 339,931.85
  4. Step 4: Simplify right side
    626,411.84x = 293,854,291,691.61
  5. Step 5: Solve for x
    x = 293,854,291,691.61/626,411.84
  6. Step 6: Final answer
    x = 469,107.18

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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.