Home / 381,331.40-571,997.10-319,123.40

Finding the Fourth Proportional to 381,331.40, 571,997.10 and 319,123.40

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Solution

The fourth proportional to 381,331.40, 571,997.10 and 319,123.40 is: 478,685.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,331.40 : 571,997.10 = 319,123.40 : x
  2. Step 2: Convert to fraction form
    381,331.40/571,997.10 = 319,123.40/x
  3. Step 3: Cross multiply
    381,331.40x = 571,997.10 × 319,123.40
  4. Step 4: Simplify right side
    381,331.40x = 182,537,659,342.14
  5. Step 5: Solve for x
    x = 182,537,659,342.14/381,331.40
  6. Step 6: Final answer
    x = 478,685.10

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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.