Home / 987,140.82-1,361,561.49-681,339.90

Finding the Fourth Proportional to 987,140.82, 1,361,561.49 and 681,339.90

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Solution

The fourth proportional to 987,140.82, 1,361,561.49 and 681,339.90 is: 939,770.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,140.82 : 1,361,561.49 = 681,339.90 : x
  2. Step 2: Convert to fraction form
    987,140.82/1,361,561.49 = 681,339.90/x
  3. Step 3: Cross multiply
    987,140.82x = 1,361,561.49 × 681,339.90
  4. Step 4: Simplify right side
    987,140.82x = 927,686,169,440.45
  5. Step 5: Solve for x
    x = 927,686,169,440.45/987,140.82
  6. Step 6: Final answer
    x = 939,770.85

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.