Home / 485,121,743.20-727,714,107.60-255,539,231.20

Finding the Fourth Proportional to 485,121,743.20, 727,714,107.60 and 255,539,231.20

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Solution

The fourth proportional to 485,121,743.20, 727,714,107.60 and 255,539,231.20 is: 383,325,435.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,121,743.20 : 727,714,107.60 = 255,539,231.20 : x
  2. Step 2: Convert to fraction form
    485,121,743.20/727,714,107.60 = 255,539,231.20/x
  3. Step 3: Cross multiply
    485,121,743.20x = 727,714,107.60 × 255,539,231.20
  4. Step 4: Simplify right side
    485,121,743.20x = 185,959,503,589,498,080
  5. Step 5: Solve for x
    x = 185,959,503,589,498,080/485,121,743.20
  6. Step 6: Final answer
    x = 383,325,435.72

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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.