Home / 782,136,205.20-1,173,204,307.80-419,339,149.20

Finding the Fourth Proportional to 782,136,205.20, 1,173,204,307.80 and 419,339,149.20

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Solution

The fourth proportional to 782,136,205.20, 1,173,204,307.80 and 419,339,149.20 is: 629,008,723.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,136,205.20 : 1,173,204,307.80 = 419,339,149.20 : x
  2. Step 2: Convert to fraction form
    782,136,205.20/1,173,204,307.80 = 419,339,149.20/x
  3. Step 3: Cross multiply
    782,136,205.20x = 1,173,204,307.80 × 419,339,149.20
  4. Step 4: Simplify right side
    782,136,205.20x = 491,970,496,270,626,880
  5. Step 5: Solve for x
    x = 491,970,496,270,626,880/782,136,205.20
  6. Step 6: Final answer
    x = 629,008,723.80

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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.