Home / 812,680.56-1,218,719.52-339,397.92

Finding the Fourth Proportional to 812,680.56, 1,218,719.52 and 339,397.92

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Solution

The fourth proportional to 812,680.56, 1,218,719.52 and 339,397.92 is: 508,971.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,680.56 : 1,218,719.52 = 339,397.92 : x
  2. Step 2: Convert to fraction form
    812,680.56/1,218,719.52 = 339,397.92/x
  3. Step 3: Cross multiply
    812,680.56x = 1,218,719.52 × 339,397.92
  4. Step 4: Simplify right side
    812,680.56x = 413,630,870,151.40
  5. Step 5: Solve for x
    x = 413,630,870,151.40/812,680.56
  6. Step 6: Final answer
    x = 508,971.04

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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.