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Finding the Fourth Proportional to 688,437.68, 950,056.20 and 382,542.32

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Solution

The fourth proportional to 688,437.68, 950,056.20 and 382,542.32 is: 527,915.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,437.68 : 950,056.20 = 382,542.32 : x
  2. Step 2: Convert to fraction form
    688,437.68/950,056.20 = 382,542.32/x
  3. Step 3: Cross multiply
    688,437.68x = 950,056.20 × 382,542.32
  4. Step 4: Simplify right side
    688,437.68x = 363,436,702,878.38
  5. Step 5: Solve for x
    x = 363,436,702,878.38/688,437.68
  6. Step 6: Final answer
    x = 527,915.18

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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.