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Finding the Fourth Proportional to 485,180.80, 727,771.20 and 433,859.20

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Solution

The fourth proportional to 485,180.80, 727,771.20 and 433,859.20 is: 650,788.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,180.80 : 727,771.20 = 433,859.20 : x
  2. Step 2: Convert to fraction form
    485,180.80/727,771.20 = 433,859.20/x
  3. Step 3: Cross multiply
    485,180.80x = 727,771.20 × 433,859.20
  4. Step 4: Simplify right side
    485,180.80x = 315,750,230,615.04
  5. Step 5: Solve for x
    x = 315,750,230,615.04/485,180.80
  6. Step 6: Final answer
    x = 650,788.80

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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.