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Finding the Fourth Proportional to 504,352.92, 696,006.90 and 278,002.20

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Solution

The fourth proportional to 504,352.92, 696,006.90 and 278,002.20 is: 383,642.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,352.92 : 696,006.90 = 278,002.20 : x
  2. Step 2: Convert to fraction form
    504,352.92/696,006.90 = 278,002.20/x
  3. Step 3: Cross multiply
    504,352.92x = 696,006.90 × 278,002.20
  4. Step 4: Simplify right side
    504,352.92x = 193,491,449,415.18
  5. Step 5: Solve for x
    x = 193,491,449,415.18/504,352.92
  6. Step 6: Final answer
    x = 383,642.96

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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.