Home / 721,811,201.70-1,082,716,802.55-261,764,379.30

Finding the Fourth Proportional to 721,811,201.70, 1,082,716,802.55 and 261,764,379.30

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Solution

The fourth proportional to 721,811,201.70, 1,082,716,802.55 and 261,764,379.30 is: 392,646,568.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,811,201.70 : 1,082,716,802.55 = 261,764,379.30 : x
  2. Step 2: Convert to fraction form
    721,811,201.70/1,082,716,802.55 = 261,764,379.30/x
  3. Step 3: Cross multiply
    721,811,201.70x = 1,082,716,802.55 × 261,764,379.30
  4. Step 4: Simplify right side
    721,811,201.70x = 283,416,691,777,181,408
  5. Step 5: Solve for x
    x = 283,416,691,777,181,408/721,811,201.70
  6. Step 6: Final answer
    x = 392,646,568.95

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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.