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Finding the Fourth Proportional to 478,515.60, 717,774.48 and 449,286.48

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Solution

The fourth proportional to 478,515.60, 717,774.48 and 449,286.48 is: 673,930.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,515.60 : 717,774.48 = 449,286.48 : x
  2. Step 2: Convert to fraction form
    478,515.60/717,774.48 = 449,286.48/x
  3. Step 3: Cross multiply
    478,515.60x = 717,774.48 × 449,286.48
  4. Step 4: Simplify right side
    478,515.60x = 322,486,369,553.03
  5. Step 5: Solve for x
    x = 322,486,369,553.03/478,515.60
  6. Step 6: Final answer
    x = 673,930.73

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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.