Home / 431,465,882.40-647,198,823.60-124,768,000.80

Finding the Fourth Proportional to 431,465,882.40, 647,198,823.60 and 124,768,000.80

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Solution

The fourth proportional to 431,465,882.40, 647,198,823.60 and 124,768,000.80 is: 187,152,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,465,882.40 : 647,198,823.60 = 124,768,000.80 : x
  2. Step 2: Convert to fraction form
    431,465,882.40/647,198,823.60 = 124,768,000.80/x
  3. Step 3: Cross multiply
    431,465,882.40x = 647,198,823.60 × 124,768,000.80
  4. Step 4: Simplify right side
    431,465,882.40x = 80,749,703,340,683,856
  5. Step 5: Solve for x
    x = 80,749,703,340,683,856/431,465,882.40
  6. Step 6: Final answer
    x = 187,152,001.20

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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.