Home / 724,991,013.30-1,087,486,519.95-449,491,998.90

Finding the Fourth Proportional to 724,991,013.30, 1,087,486,519.95 and 449,491,998.90

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Solution

The fourth proportional to 724,991,013.30, 1,087,486,519.95 and 449,491,998.90 is: 674,237,998.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,991,013.30 : 1,087,486,519.95 = 449,491,998.90 : x
  2. Step 2: Convert to fraction form
    724,991,013.30/1,087,486,519.95 = 449,491,998.90/x
  3. Step 3: Cross multiply
    724,991,013.30x = 1,087,486,519.95 × 449,491,998.90
  4. Step 4: Simplify right side
    724,991,013.30x = 488,816,489,629,130,240
  5. Step 5: Solve for x
    x = 488,816,489,629,130,240/724,991,013.30
  6. Step 6: Final answer
    x = 674,237,998.35

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Half scale
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Double scale
Find fourth proportional to 724,991,014.30, 1,087,486,521.45 and 449,491,999.90
Similar ratio
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1.5x scale

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.