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Finding the Fourth Proportional to 607,517.70, 911,276.55 and 418,560.90

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Solution

The fourth proportional to 607,517.70, 911,276.55 and 418,560.90 is: 627,841.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,517.70 : 911,276.55 = 418,560.90 : x
  2. Step 2: Convert to fraction form
    607,517.70/911,276.55 = 418,560.90/x
  3. Step 3: Cross multiply
    607,517.70x = 911,276.55 × 418,560.90
  4. Step 4: Simplify right side
    607,517.70x = 381,424,732,916.90
  5. Step 5: Solve for x
    x = 381,424,732,916.90/607,517.70
  6. Step 6: Final answer
    x = 627,841.35

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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.