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Finding the Fourth Proportional to 809,891.17, 1,215,062.03 and 354,401.24

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Solution

The fourth proportional to 809,891.17, 1,215,062.03 and 354,401.24 is: 531,700.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,891.17 : 1,215,062.03 = 354,401.24 : x
  2. Step 2: Convert to fraction form
    809,891.17/1,215,062.03 = 354,401.24/x
  3. Step 3: Cross multiply
    809,891.17x = 1,215,062.03 × 354,401.24
  4. Step 4: Simplify right side
    809,891.17x = 430,619,488,336.91
  5. Step 5: Solve for x
    x = 430,619,488,336.91/809,891.17
  6. Step 6: Final answer
    x = 531,700.44

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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.