Home / 763,177.62-1,143,690.17-421,774.78

Finding the Fourth Proportional to 763,177.62, 1,143,690.17 and 421,774.78

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Solution

The fourth proportional to 763,177.62, 1,143,690.17 and 421,774.78 is: 632,067.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,177.62 : 1,143,690.17 = 421,774.78 : x
  2. Step 2: Convert to fraction form
    763,177.62/1,143,690.17 = 421,774.78/x
  3. Step 3: Cross multiply
    763,177.62x = 1,143,690.17 × 421,774.78
  4. Step 4: Simplify right side
    763,177.62x = 482,379,669,839.91
  5. Step 5: Solve for x
    x = 482,379,669,839.91/763,177.62
  6. Step 6: Final answer
    x = 632,067.37

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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.