Home / 1,391,641.35-2,087,517.23-661,989.35

Finding the Fourth Proportional to 1,391,641.35, 2,087,517.23 and 661,989.35

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Solution

The fourth proportional to 1,391,641.35, 2,087,517.23 and 661,989.35 is: 993,010.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,641.35 : 2,087,517.23 = 661,989.35 : x
  2. Step 2: Convert to fraction form
    1,391,641.35/2,087,517.23 = 661,989.35/x
  3. Step 3: Cross multiply
    1,391,641.35x = 2,087,517.23 × 661,989.35
  4. Step 4: Simplify right side
    1,391,641.35x = 1,381,914,160,453.97
  5. Step 5: Solve for x
    x = 1,381,914,160,453.97/1,391,641.35
  6. Step 6: Final answer
    x = 993,010.28

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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.