Home / 719,170.38-992,454.12-396,880.43

Finding the Fourth Proportional to 719,170.38, 992,454.12 and 396,880.43

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Solution

The fourth proportional to 719,170.38, 992,454.12 and 396,880.43 is: 547,694.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,170.38 : 992,454.12 = 396,880.43 : x
  2. Step 2: Convert to fraction form
    719,170.38/992,454.12 = 396,880.43/x
  3. Step 3: Cross multiply
    719,170.38x = 992,454.12 × 396,880.43
  4. Step 4: Simplify right side
    719,170.38x = 393,885,612,938.60
  5. Step 5: Solve for x
    x = 393,885,612,938.60/719,170.38
  6. Step 6: Final answer
    x = 547,694.43

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Half scale
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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.