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Finding the Fourth Proportional to 610,376.25, 842,229.10 and 338,446.13

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Solution

The fourth proportional to 610,376.25, 842,229.10 and 338,446.13 is: 467,005.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,376.25 : 842,229.10 = 338,446.13 : x
  2. Step 2: Convert to fraction form
    610,376.25/842,229.10 = 338,446.13/x
  3. Step 3: Cross multiply
    610,376.25x = 842,229.10 × 338,446.13
  4. Step 4: Simplify right side
    610,376.25x = 285,049,179,468.38
  5. Step 5: Solve for x
    x = 285,049,179,468.38/610,376.25
  6. Step 6: Final answer
    x = 467,005.69

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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.