Home / 431,435,422.80-647,418,854.70-185,909,680.80

Finding the Fourth Proportional to 431,435,422.80, 647,418,854.70 and 185,909,680.80

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Solution

The fourth proportional to 431,435,422.80, 647,418,854.70 and 185,909,680.80 is: 278,979,022.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,435,422.80 : 647,418,854.70 = 185,909,680.80 : x
  2. Step 2: Convert to fraction form
    431,435,422.80/647,418,854.70 = 185,909,680.80/x
  3. Step 3: Cross multiply
    431,435,422.80x = 647,418,854.70 × 185,909,680.80
  4. Step 4: Simplify right side
    431,435,422.80x = 120,361,432,621,178,592
  5. Step 5: Solve for x
    x = 120,361,432,621,178,592/431,435,422.80
  6. Step 6: Final answer
    x = 278,979,022.72

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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.