Home / 812,519.60-1,218,892.68-339,096.56

Finding the Fourth Proportional to 812,519.60, 1,218,892.68 and 339,096.56

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Solution

The fourth proportional to 812,519.60, 1,218,892.68 and 339,096.56 is: 508,692.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,519.60 : 1,218,892.68 = 339,096.56 : x
  2. Step 2: Convert to fraction form
    812,519.60/1,218,892.68 = 339,096.56/x
  3. Step 3: Cross multiply
    812,519.60x = 1,218,892.68 × 339,096.56
  4. Step 4: Simplify right side
    812,519.60x = 413,322,314,797.18
  5. Step 5: Solve for x
    x = 413,322,314,797.18/812,519.60
  6. Step 6: Final answer
    x = 508,692.12

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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.