Home / 681,100.11-938,936.21-476,517.20

Finding the Fourth Proportional to 681,100.11, 938,936.21 and 476,517.20

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Solution

The fourth proportional to 681,100.11, 938,936.21 and 476,517.20 is: 656,906.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,100.11 : 938,936.21 = 476,517.20 : x
  2. Step 2: Convert to fraction form
    681,100.11/938,936.21 = 476,517.20/x
  3. Step 3: Cross multiply
    681,100.11x = 938,936.21 × 476,517.20
  4. Step 4: Simplify right side
    681,100.11x = 447,419,246,690.55
  5. Step 5: Solve for x
    x = 447,419,246,690.55/681,100.11
  6. Step 6: Final answer
    x = 656,906.73

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.