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Finding the Fourth Proportional to 479,933.88, 720,049.38 and 288,022.62

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Solution

The fourth proportional to 479,933.88, 720,049.38 and 288,022.62 is: 432,123.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,933.88 : 720,049.38 = 288,022.62 : x
  2. Step 2: Convert to fraction form
    479,933.88/720,049.38 = 288,022.62/x
  3. Step 3: Cross multiply
    479,933.88x = 720,049.38 × 288,022.62
  4. Step 4: Simplify right side
    479,933.88x = 207,390,508,956.98
  5. Step 5: Solve for x
    x = 207,390,508,956.98/479,933.88
  6. Step 6: Final answer
    x = 432,123.09

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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.