Home / 812,517.60-1,218,889.68-339,094.56

Finding the Fourth Proportional to 812,517.60, 1,218,889.68 and 339,094.56

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Solution

The fourth proportional to 812,517.60, 1,218,889.68 and 339,094.56 is: 508,689.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,517.60 : 1,218,889.68 = 339,094.56 : x
  2. Step 2: Convert to fraction form
    812,517.60/1,218,889.68 = 339,094.56/x
  3. Step 3: Cross multiply
    812,517.60x = 1,218,889.68 × 339,094.56
  4. Step 4: Simplify right side
    812,517.60x = 413,318,859,728.14
  5. Step 5: Solve for x
    x = 413,318,859,728.14/812,517.60
  6. Step 6: Final answer
    x = 508,689.12

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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.