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Finding the Fourth Proportional to 617,377.60, 926,003.76 and 418,972.96

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Solution

The fourth proportional to 617,377.60, 926,003.76 and 418,972.96 is: 628,416.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,377.60 : 926,003.76 = 418,972.96 : x
  2. Step 2: Convert to fraction form
    617,377.60/926,003.76 = 418,972.96/x
  3. Step 3: Cross multiply
    617,377.60x = 926,003.76 × 418,972.96
  4. Step 4: Simplify right side
    617,377.60x = 387,970,536,298.33
  5. Step 5: Solve for x
    x = 387,970,536,298.33/617,377.60
  6. Step 6: Final answer
    x = 628,416.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.