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Finding the Fourth Proportional to 638,956.80, 958,435.20 and 244,972.80

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Solution

The fourth proportional to 638,956.80, 958,435.20 and 244,972.80 is: 367,459.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,956.80 : 958,435.20 = 244,972.80 : x
  2. Step 2: Convert to fraction form
    638,956.80/958,435.20 = 244,972.80/x
  3. Step 3: Cross multiply
    638,956.80x = 958,435.20 × 244,972.80
  4. Step 4: Simplify right side
    638,956.80x = 234,790,554,562.56
  5. Step 5: Solve for x
    x = 234,790,554,562.56/638,956.80
  6. Step 6: Final answer
    x = 367,459.20

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Double scale
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Similar ratio
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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.