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Finding the Fourth Proportional to 814,672.70, 1,222,446.45 and 341,405.90

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Solution

The fourth proportional to 814,672.70, 1,222,446.45 and 341,405.90 is: 512,292.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,672.70 : 1,222,446.45 = 341,405.90 : x
  2. Step 2: Convert to fraction form
    814,672.70/1,222,446.45 = 341,405.90/x
  3. Step 3: Cross multiply
    814,672.70x = 1,222,446.45 × 341,405.90
  4. Step 4: Simplify right side
    814,672.70x = 417,350,430,464.06
  5. Step 5: Solve for x
    x = 417,350,430,464.06/814,672.70
  6. Step 6: Final answer
    x = 512,292.15

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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.