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Finding the Fourth Proportional to 447,377.62, 672,187.44 and 420,473.42

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Solution

The fourth proportional to 447,377.62, 672,187.44 and 420,473.42 is: 631,763.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,377.62 : 672,187.44 = 420,473.42 : x
  2. Step 2: Convert to fraction form
    447,377.62/672,187.44 = 420,473.42/x
  3. Step 3: Cross multiply
    447,377.62x = 672,187.44 × 420,473.42
  4. Step 4: Simplify right side
    447,377.62x = 282,636,951,777.85
  5. Step 5: Solve for x
    x = 282,636,951,777.85/447,377.62
  6. Step 6: Final answer
    x = 631,763.73

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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.