Home / 431,622,509.60-647,433,764.40-140,517,063.20

Finding the Fourth Proportional to 431,622,509.60, 647,433,764.40 and 140,517,063.20

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Solution

The fourth proportional to 431,622,509.60, 647,433,764.40 and 140,517,063.20 is: 210,775,594.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,622,509.60 : 647,433,764.40 = 140,517,063.20 : x
  2. Step 2: Convert to fraction form
    431,622,509.60/647,433,764.40 = 140,517,063.20/x
  3. Step 3: Cross multiply
    431,622,509.60x = 647,433,764.40 × 140,517,063.20
  4. Step 4: Simplify right side
    431,622,509.60x = 90,975,491,190,008,704
  5. Step 5: Solve for x
    x = 90,975,491,190,008,704/431,622,509.60
  6. Step 6: Final answer
    x = 210,775,594.80

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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.