Home / 681,816-1,022,871.63-261,091.89

Finding the Fourth Proportional to 681,816, 1,022,871.63 and 261,091.89

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Solution

The fourth proportional to 681,816, 1,022,871.63 and 261,091.89 is: 391,694.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,816 : 1,022,871.63 = 261,091.89 : x
  2. Step 2: Convert to fraction form
    681,816/1,022,871.63 = 261,091.89/x
  3. Step 3: Cross multiply
    681,816x = 1,022,871.63 × 261,091.89
  4. Step 4: Simplify right side
    681,816x = 267,063,487,104.08
  5. Step 5: Solve for x
    x = 267,063,487,104.08/681,816
  6. Step 6: Final answer
    x = 391,694.37

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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.