Home / 431,445,977.43-647,165,062.77-136,341,145.74

Finding the Fourth Proportional to 431,445,977.43, 647,165,062.77 and 136,341,145.74

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Solution

The fourth proportional to 431,445,977.43, 647,165,062.77 and 136,341,145.74 is: 204,510,485.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,445,977.43 : 647,165,062.77 = 136,341,145.74 : x
  2. Step 2: Convert to fraction form
    431,445,977.43/647,165,062.77 = 136,341,145.74/x
  3. Step 3: Cross multiply
    431,445,977.43x = 647,165,062.77 × 136,341,145.74
  4. Step 4: Simplify right side
    431,445,977.43x = 88,235,226,140,960,816
  5. Step 5: Solve for x
    x = 88,235,226,140,960,816/431,445,977.43
  6. Step 6: Final answer
    x = 204,510,485.11

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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.