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Finding the Fourth Proportional to 804,887.70, 1,206,894.15 and 331,620.90

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Solution

The fourth proportional to 804,887.70, 1,206,894.15 and 331,620.90 is: 497,251.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,887.70 : 1,206,894.15 = 331,620.90 : x
  2. Step 2: Convert to fraction form
    804,887.70/1,206,894.15 = 331,620.90/x
  3. Step 3: Cross multiply
    804,887.70x = 1,206,894.15 × 331,620.90
  4. Step 4: Simplify right side
    804,887.70x = 400,231,324,227.74
  5. Step 5: Solve for x
    x = 400,231,324,227.74/804,887.70
  6. Step 6: Final answer
    x = 497,251.14

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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.