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Finding the Fourth Proportional to 694,429.60, 958,308.24 and 392,624.80

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Solution

The fourth proportional to 694,429.60, 958,308.24 and 392,624.80 is: 541,819.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,429.60 : 958,308.24 = 392,624.80 : x
  2. Step 2: Convert to fraction form
    694,429.60/958,308.24 = 392,624.80/x
  3. Step 3: Cross multiply
    694,429.60x = 958,308.24 × 392,624.80
  4. Step 4: Simplify right side
    694,429.60x = 376,255,581,068.35
  5. Step 5: Solve for x
    x = 376,255,581,068.35/694,429.60
  6. Step 6: Final answer
    x = 541,819.62

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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.