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Finding the Fourth Proportional to 384,379.80, 576,569.70 and 378,474.90

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Solution

The fourth proportional to 384,379.80, 576,569.70 and 378,474.90 is: 567,712.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,379.80 : 576,569.70 = 378,474.90 : x
  2. Step 2: Convert to fraction form
    384,379.80/576,569.70 = 378,474.90/x
  3. Step 3: Cross multiply
    384,379.80x = 576,569.70 × 378,474.90
  4. Step 4: Simplify right side
    384,379.80x = 218,217,159,550.53
  5. Step 5: Solve for x
    x = 218,217,159,550.53/384,379.80
  6. Step 6: Final answer
    x = 567,712.35

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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.