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Finding the Fourth Proportional to 814,658.70, 1,222,425.45 and 341,391.90

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Solution

The fourth proportional to 814,658.70, 1,222,425.45 and 341,391.90 is: 512,271.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,658.70 : 1,222,425.45 = 341,391.90 : x
  2. Step 2: Convert to fraction form
    814,658.70/1,222,425.45 = 341,391.90/x
  3. Step 3: Cross multiply
    814,658.70x = 1,222,425.45 × 341,391.90
  4. Step 4: Simplify right side
    814,658.70x = 417,326,146,983.86
  5. Step 5: Solve for x
    x = 417,326,146,983.86/814,658.70
  6. Step 6: Final answer
    x = 512,271.15

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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.