Home / 782,136,000.20-1,173,204,000.30-419,338,944.20

Finding the Fourth Proportional to 782,136,000.20, 1,173,204,000.30 and 419,338,944.20

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Solution

The fourth proportional to 782,136,000.20, 1,173,204,000.30 and 419,338,944.20 is: 629,008,416.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,136,000.20 : 1,173,204,000.30 = 419,338,944.20 : x
  2. Step 2: Convert to fraction form
    782,136,000.20/1,173,204,000.30 = 419,338,944.20/x
  3. Step 3: Cross multiply
    782,136,000.20x = 1,173,204,000.30 × 419,338,944.20
  4. Step 4: Simplify right side
    782,136,000.20x = 491,970,126,817,018,432
  5. Step 5: Solve for x
    x = 491,970,126,817,018,432/782,136,000.20
  6. Step 6: Final answer
    x = 629,008,416.30

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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.