Home / 1,188,091.20-1,639,414.80-678,826.56

Finding the Fourth Proportional to 1,188,091.20, 1,639,414.80 and 678,826.56

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Solution

The fourth proportional to 1,188,091.20, 1,639,414.80 and 678,826.56 is: 936,694.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,091.20 : 1,639,414.80 = 678,826.56 : x
  2. Step 2: Convert to fraction form
    1,188,091.20/1,639,414.80 = 678,826.56/x
  3. Step 3: Cross multiply
    1,188,091.20x = 1,639,414.80 × 678,826.56
  4. Step 4: Simplify right side
    1,188,091.20x = 1,112,878,309,097.09
  5. Step 5: Solve for x
    x = 1,112,878,309,097.09/1,188,091.20
  6. Step 6: Final answer
    x = 936,694.35

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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.