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Finding the Fourth Proportional to 515,832.60, 773,748.90 and 488,276.40

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Solution

The fourth proportional to 515,832.60, 773,748.90 and 488,276.40 is: 732,414.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,832.60 : 773,748.90 = 488,276.40 : x
  2. Step 2: Convert to fraction form
    515,832.60/773,748.90 = 488,276.40/x
  3. Step 3: Cross multiply
    515,832.60x = 773,748.90 × 488,276.40
  4. Step 4: Simplify right side
    515,832.60x = 377,803,327,395.96
  5. Step 5: Solve for x
    x = 377,803,327,395.96/515,832.60
  6. Step 6: Final answer
    x = 732,414.60

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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.