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Finding the Fourth Proportional to 801,400.80, 1,201,080.60 and 327,550.80

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Solution

The fourth proportional to 801,400.80, 1,201,080.60 and 327,550.80 is: 490,909.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,400.80 : 1,201,080.60 = 327,550.80 : x
  2. Step 2: Convert to fraction form
    801,400.80/1,201,080.60 = 327,550.80/x
  3. Step 3: Cross multiply
    801,400.80x = 1,201,080.60 × 327,550.80
  4. Step 4: Simplify right side
    801,400.80x = 393,414,911,394.48
  5. Step 5: Solve for x
    x = 393,414,911,394.48/801,400.80
  6. Step 6: Final answer
    x = 490,909.06

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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.