Home / 678,881.43-1,016,772.10-324,144.56

Finding the Fourth Proportional to 678,881.43, 1,016,772.10 and 324,144.56

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Solution

The fourth proportional to 678,881.43, 1,016,772.10 and 324,144.56 is: 485,476.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,881.43 : 1,016,772.10 = 324,144.56 : x
  2. Step 2: Convert to fraction form
    678,881.43/1,016,772.10 = 324,144.56/x
  3. Step 3: Cross multiply
    678,881.43x = 1,016,772.10 × 324,144.56
  4. Step 4: Simplify right side
    678,881.43x = 329,581,144,974.78
  5. Step 5: Solve for x
    x = 329,581,144,974.78/678,881.43
  6. Step 6: Final answer
    x = 485,476.74

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