Home / 721,170,091.20-1,081,755,136.80-449,072,299.20

Finding the Fourth Proportional to 721,170,091.20, 1,081,755,136.80 and 449,072,299.20

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Solution

The fourth proportional to 721,170,091.20, 1,081,755,136.80 and 449,072,299.20 is: 673,608,448.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,170,091.20 : 1,081,755,136.80 = 449,072,299.20 : x
  2. Step 2: Convert to fraction form
    721,170,091.20/1,081,755,136.80 = 449,072,299.20/x
  3. Step 3: Cross multiply
    721,170,091.20x = 1,081,755,136.80 × 449,072,299.20
  4. Step 4: Simplify right side
    721,170,091.20x = 485,786,266,454,186,496
  5. Step 5: Solve for x
    x = 485,786,266,454,186,496/721,170,091.20
  6. Step 6: Final answer
    x = 673,608,448.80

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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.