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Finding the Fourth Proportional to 663,134.78, 994,996.20 and 347,516.66

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Solution

The fourth proportional to 663,134.78, 994,996.20 and 347,516.66 is: 521,429.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,134.78 : 994,996.20 = 347,516.66 : x
  2. Step 2: Convert to fraction form
    663,134.78/994,996.20 = 347,516.66/x
  3. Step 3: Cross multiply
    663,134.78x = 994,996.20 × 347,516.66
  4. Step 4: Simplify right side
    663,134.78x = 345,777,756,136.69
  5. Step 5: Solve for x
    x = 345,777,756,136.69/663,134.78
  6. Step 6: Final answer
    x = 521,429.08

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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.