Home / 431,413,879.20-647,120,818.80-299,403,934.80

Finding the Fourth Proportional to 431,413,879.20, 647,120,818.80 and 299,403,934.80

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Solution

The fourth proportional to 431,413,879.20, 647,120,818.80 and 299,403,934.80 is: 449,105,902.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,413,879.20 : 647,120,818.80 = 299,403,934.80 : x
  2. Step 2: Convert to fraction form
    431,413,879.20/647,120,818.80 = 299,403,934.80/x
  3. Step 3: Cross multiply
    431,413,879.20x = 647,120,818.80 × 299,403,934.80
  4. Step 4: Simplify right side
    431,413,879.20x = 193,750,519,439,717,792
  5. Step 5: Solve for x
    x = 193,750,519,439,717,792/431,413,879.20
  6. Step 6: Final answer
    x = 449,105,902.20

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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.