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Finding the Fourth Proportional to 384,337.80, 576,506.70 and 378,432.90

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Solution

The fourth proportional to 384,337.80, 576,506.70 and 378,432.90 is: 567,649.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,337.80 : 576,506.70 = 378,432.90 : x
  2. Step 2: Convert to fraction form
    384,337.80/576,506.70 = 378,432.90/x
  3. Step 3: Cross multiply
    384,337.80x = 576,506.70 × 378,432.90
  4. Step 4: Simplify right side
    384,337.80x = 218,169,102,350.43
  5. Step 5: Solve for x
    x = 218,169,102,350.43/384,337.80
  6. Step 6: Final answer
    x = 567,649.35

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Similar ratio
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1.5x scale

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.