Home / 987,135.82-1,361,554.59-681,334.90

Finding the Fourth Proportional to 987,135.82, 1,361,554.59 and 681,334.90

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Solution

The fourth proportional to 987,135.82, 1,361,554.59 and 681,334.90 is: 939,763.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,135.82 : 1,361,554.59 = 681,334.90 : x
  2. Step 2: Convert to fraction form
    987,135.82/1,361,554.59 = 681,334.90/x
  3. Step 3: Cross multiply
    987,135.82x = 1,361,554.59 × 681,334.90
  4. Step 4: Simplify right side
    987,135.82x = 927,674,660,422.19
  5. Step 5: Solve for x
    x = 927,674,660,422.19/987,135.82
  6. Step 6: Final answer
    x = 939,763.95

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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.