Home / 987,141.82-1,361,562.87-681,340.90

Finding the Fourth Proportional to 987,141.82, 1,361,562.87 and 681,340.90

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Solution

The fourth proportional to 987,141.82, 1,361,562.87 and 681,340.90 is: 939,772.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,141.82 : 1,361,562.87 = 681,340.90 : x
  2. Step 2: Convert to fraction form
    987,141.82/1,361,562.87 = 681,340.90/x
  3. Step 3: Cross multiply
    987,141.82x = 1,361,562.87 × 681,340.90
  4. Step 4: Simplify right side
    987,141.82x = 927,688,471,252.38
  5. Step 5: Solve for x
    x = 927,688,471,252.38/987,141.82
  6. Step 6: Final answer
    x = 939,772.23

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Why These Related Problems?

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