Home / 431,682,778.20-647,524,167.30-402,772,387.80

Finding the Fourth Proportional to 431,682,778.20, 647,524,167.30 and 402,772,387.80

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Solution

The fourth proportional to 431,682,778.20, 647,524,167.30 and 402,772,387.80 is: 604,158,581.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,682,778.20 : 647,524,167.30 = 402,772,387.80 : x
  2. Step 2: Convert to fraction form
    431,682,778.20/647,524,167.30 = 402,772,387.80/x
  3. Step 3: Cross multiply
    431,682,778.20x = 647,524,167.30 × 402,772,387.80
  4. Step 4: Simplify right side
    431,682,778.20x = 260,804,855,021,627,680
  5. Step 5: Solve for x
    x = 260,804,855,021,627,680/431,682,778.20
  6. Step 6: Final answer
    x = 604,158,581.70

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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.