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Finding the Fourth Proportional to 800,356.55, 1,200,536.84 and 327,041.82

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Solution

The fourth proportional to 800,356.55, 1,200,536.84 and 327,041.82 is: 490,563.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,356.55 : 1,200,536.84 = 327,041.82 : x
  2. Step 2: Convert to fraction form
    800,356.55/1,200,536.84 = 327,041.82/x
  3. Step 3: Cross multiply
    800,356.55x = 1,200,536.84 × 327,041.82
  4. Step 4: Simplify right side
    800,356.55x = 392,625,753,948.25
  5. Step 5: Solve for x
    x = 392,625,753,948.25/800,356.55
  6. Step 6: Final answer
    x = 490,563.56

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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.