Home / 431,567,995.60-647,351,993.40-392,028,785.20

Finding the Fourth Proportional to 431,567,995.60, 647,351,993.40 and 392,028,785.20

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Solution

The fourth proportional to 431,567,995.60, 647,351,993.40 and 392,028,785.20 is: 588,043,177.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,567,995.60 : 647,351,993.40 = 392,028,785.20 : x
  2. Step 2: Convert to fraction form
    431,567,995.60/647,351,993.40 = 392,028,785.20/x
  3. Step 3: Cross multiply
    431,567,995.60x = 647,351,993.40 × 392,028,785.20
  4. Step 4: Simplify right side
    431,567,995.60x = 253,780,615,569,400,416
  5. Step 5: Solve for x
    x = 253,780,615,569,400,416/431,567,995.60
  6. Step 6: Final answer
    x = 588,043,177.80

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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.