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Finding the Fourth Proportional to 448,049.10, 672,073.65 and 418,305.90

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Solution

The fourth proportional to 448,049.10, 672,073.65 and 418,305.90 is: 627,458.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,049.10 : 672,073.65 = 418,305.90 : x
  2. Step 2: Convert to fraction form
    448,049.10/672,073.65 = 418,305.90/x
  3. Step 3: Cross multiply
    448,049.10x = 672,073.65 × 418,305.90
  4. Step 4: Simplify right side
    448,049.10x = 281,132,373,029.54
  5. Step 5: Solve for x
    x = 281,132,373,029.54/448,049.10
  6. Step 6: Final answer
    x = 627,458.85

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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.