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Finding the Fourth Proportional to 515,835.60, 773,753.40 and 488,279.40

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Solution

The fourth proportional to 515,835.60, 773,753.40 and 488,279.40 is: 732,419.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,835.60 : 773,753.40 = 488,279.40 : x
  2. Step 2: Convert to fraction form
    515,835.60/773,753.40 = 488,279.40/x
  3. Step 3: Cross multiply
    515,835.60x = 773,753.40 × 488,279.40
  4. Step 4: Simplify right side
    515,835.60x = 377,807,845,899.96
  5. Step 5: Solve for x
    x = 377,807,845,899.96/515,835.60
  6. Step 6: Final answer
    x = 732,419.10

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1.5x scale

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.