Home / 681,813-1,022,867.13-261,088.89

Finding the Fourth Proportional to 681,813, 1,022,867.13 and 261,088.89

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Solution

The fourth proportional to 681,813, 1,022,867.13 and 261,088.89 is: 391,689.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,813 : 1,022,867.13 = 261,088.89 : x
  2. Step 2: Convert to fraction form
    681,813/1,022,867.13 = 261,088.89/x
  3. Step 3: Cross multiply
    681,813x = 1,022,867.13 × 261,088.89
  4. Step 4: Simplify right side
    681,813x = 267,059,243,589.19
  5. Step 5: Solve for x
    x = 267,059,243,589.19/681,813
  6. Step 6: Final answer
    x = 391,689.87

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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.