Home / 782,859,545.80-1,175,196,000.30-420,062,489.80

Finding the Fourth Proportional to 782,859,545.80, 1,175,196,000.30 and 420,062,489.80

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Solution

The fourth proportional to 782,859,545.80, 1,175,196,000.30 and 420,062,489.80 is: 630,580,236.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,859,545.80 : 1,175,196,000.30 = 420,062,489.80 : x
  2. Step 2: Convert to fraction form
    782,859,545.80/1,175,196,000.30 = 420,062,489.80/x
  3. Step 3: Cross multiply
    782,859,545.80x = 1,175,196,000.30 × 420,062,489.80
  4. Step 4: Simplify right side
    782,859,545.80x = 493,655,757,889,019,520
  5. Step 5: Solve for x
    x = 493,655,757,889,019,520/782,859,545.80
  6. Step 6: Final answer
    x = 630,580,236.95

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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.