Home / 431,568,007.60-647,352,011.40-392,028,797.20

Finding the Fourth Proportional to 431,568,007.60, 647,352,011.40 and 392,028,797.20

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Solution

The fourth proportional to 431,568,007.60, 647,352,011.40 and 392,028,797.20 is: 588,043,195.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,568,007.60 : 647,352,011.40 = 392,028,797.20 : x
  2. Step 2: Convert to fraction form
    431,568,007.60/647,352,011.40 = 392,028,797.20/x
  3. Step 3: Cross multiply
    431,568,007.60x = 647,352,011.40 × 392,028,797.20
  4. Step 4: Simplify right side
    431,568,007.60x = 253,780,630,394,142,656
  5. Step 5: Solve for x
    x = 253,780,630,394,142,656/431,568,007.60
  6. Step 6: Final answer
    x = 588,043,195.80

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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.