Home / 807,422,545.20-1,211,700,688.20-347,690,650.80

Finding the Fourth Proportional to 807,422,545.20, 1,211,700,688.20 and 347,690,650.80

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Solution

The fourth proportional to 807,422,545.20, 1,211,700,688.20 and 347,690,650.80 is: 521,780,080.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,422,545.20 : 1,211,700,688.20 = 347,690,650.80 : x
  2. Step 2: Convert to fraction form
    807,422,545.20/1,211,700,688.20 = 347,690,650.80/x
  3. Step 3: Cross multiply
    807,422,545.20x = 1,211,700,688.20 × 347,690,650.80
  4. Step 4: Simplify right side
    807,422,545.20x = 421,297,000,855,065,920
  5. Step 5: Solve for x
    x = 421,297,000,855,065,920/807,422,545.20
  6. Step 6: Final answer
    x = 521,780,080.78

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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.