Home / 1,191,127.20-1,643,828.40-681,817.44

Finding the Fourth Proportional to 1,191,127.20, 1,643,828.40 and 681,817.44

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Solution

The fourth proportional to 1,191,127.20, 1,643,828.40 and 681,817.44 is: 940,949.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,127.20 : 1,643,828.40 = 681,817.44 : x
  2. Step 2: Convert to fraction form
    1,191,127.20/1,643,828.40 = 681,817.44/x
  3. Step 3: Cross multiply
    1,191,127.20x = 1,643,828.40 × 681,817.44
  4. Step 4: Simplify right side
    1,191,127.20x = 1,120,790,871,487.30
  5. Step 5: Solve for x
    x = 1,120,790,871,487.30/1,191,127.20
  6. Step 6: Final answer
    x = 940,949.78

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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.