Home / 812,116.42-1,217,754.11-432,935.31

Finding the Fourth Proportional to 812,116.42, 1,217,754.11 and 432,935.31

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Solution

The fourth proportional to 812,116.42, 1,217,754.11 and 432,935.31 is: 649,178.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,116.42 : 1,217,754.11 = 432,935.31 : x
  2. Step 2: Convert to fraction form
    812,116.42/1,217,754.11 = 432,935.31/x
  3. Step 3: Cross multiply
    812,116.42x = 1,217,754.11 × 432,935.31
  4. Step 4: Simplify right side
    812,116.42x = 527,208,748,989.90
  5. Step 5: Solve for x
    x = 527,208,748,989.90/812,116.42
  6. Step 6: Final answer
    x = 649,178.78

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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.