Home / 681,103.12-938,940.34-476,520.20

Finding the Fourth Proportional to 681,103.12, 938,940.34 and 476,520.20

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Solution

The fourth proportional to 681,103.12, 938,940.34 and 476,520.20 is: 656,910.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,103.12 : 938,940.34 = 476,520.20 : x
  2. Step 2: Convert to fraction form
    681,103.12/938,940.34 = 476,520.20/x
  3. Step 3: Cross multiply
    681,103.12x = 938,940.34 × 476,520.20
  4. Step 4: Simplify right side
    681,103.12x = 447,424,038,604.87
  5. Step 5: Solve for x
    x = 447,424,038,604.87/681,103.12
  6. Step 6: Final answer
    x = 656,910.86

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Double scale
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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.