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Finding the Fourth Proportional to 439,708.60, 657,489.30 and 327,734.20

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Solution

The fourth proportional to 439,708.60, 657,489.30 and 327,734.20 is: 490,055.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,708.60 : 657,489.30 = 327,734.20 : x
  2. Step 2: Convert to fraction form
    439,708.60/657,489.30 = 327,734.20/x
  3. Step 3: Cross multiply
    439,708.60x = 657,489.30 × 327,734.20
  4. Step 4: Simplify right side
    439,708.60x = 215,481,729,744.06
  5. Step 5: Solve for x
    x = 215,481,729,744.06/439,708.60
  6. Step 6: Final answer
    x = 490,055.75

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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.