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Finding the Fourth Proportional to 515,844.10, 773,766.15 and 488,287.90

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Solution

The fourth proportional to 515,844.10, 773,766.15 and 488,287.90 is: 732,431.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,844.10 : 773,766.15 = 488,287.90 : x
  2. Step 2: Convert to fraction form
    515,844.10/773,766.15 = 488,287.90/x
  3. Step 3: Cross multiply
    515,844.10x = 773,766.15 × 488,287.90
  4. Step 4: Simplify right side
    515,844.10x = 377,820,648,474.59
  5. Step 5: Solve for x
    x = 377,820,648,474.59/515,844.10
  6. Step 6: Final answer
    x = 732,431.85

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Double scale
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Similar ratio
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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.