Home / 485,091,019.20-727,668,021.60-255,508,507.20

Finding the Fourth Proportional to 485,091,019.20, 727,668,021.60 and 255,508,507.20

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Solution

The fourth proportional to 485,091,019.20, 727,668,021.60 and 255,508,507.20 is: 383,279,348.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,091,019.20 : 727,668,021.60 = 255,508,507.20 : x
  2. Step 2: Convert to fraction form
    485,091,019.20/727,668,021.60 = 255,508,507.20/x
  3. Step 3: Cross multiply
    485,091,019.20x = 727,668,021.60 × 255,508,507.20
  4. Step 4: Simplify right side
    485,091,019.20x = 185,925,369,936,193,344
  5. Step 5: Solve for x
    x = 185,925,369,936,193,344/485,091,019.20
  6. Step 6: Final answer
    x = 383,279,348.78

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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.