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Finding the Fourth Proportional to 658,682.32, 908,981.68 and 356,876.32

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Solution

The fourth proportional to 658,682.32, 908,981.68 and 356,876.32 is: 492,489.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,682.32 : 908,981.68 = 356,876.32 : x
  2. Step 2: Convert to fraction form
    658,682.32/908,981.68 = 356,876.32/x
  3. Step 3: Cross multiply
    658,682.32x = 908,981.68 × 356,876.32
  4. Step 4: Simplify right side
    658,682.32x = 324,394,036,905.82
  5. Step 5: Solve for x
    x = 324,394,036,905.82/658,682.32
  6. Step 6: Final answer
    x = 492,489.36

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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.