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Finding the Fourth Proportional to 485,958.80, 726,605.40 and 359,987.60

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Solution

The fourth proportional to 485,958.80, 726,605.40 and 359,987.60 is: 538,253.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,958.80 : 726,605.40 = 359,987.60 : x
  2. Step 2: Convert to fraction form
    485,958.80/726,605.40 = 359,987.60/x
  3. Step 3: Cross multiply
    485,958.80x = 726,605.40 × 359,987.60
  4. Step 4: Simplify right side
    485,958.80x = 261,568,934,093.04
  5. Step 5: Solve for x
    x = 261,568,934,093.04/485,958.80
  6. Step 6: Final answer
    x = 538,253.31

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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.