Home / 1,396,332.40-2,093,116.20-685,778.80

Finding the Fourth Proportional to 1,396,332.40, 2,093,116.20 and 685,778.80

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Solution

The fourth proportional to 1,396,332.40, 2,093,116.20 and 685,778.80 is: 1,027,989.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396,332.40 : 2,093,116.20 = 685,778.80 : x
  2. Step 2: Convert to fraction form
    1,396,332.40/2,093,116.20 = 685,778.80/x
  3. Step 3: Cross multiply
    1,396,332.40x = 2,093,116.20 × 685,778.80
  4. Step 4: Simplify right side
    1,396,332.40x = 1,435,414,715,896.56
  5. Step 5: Solve for x
    x = 1,435,414,715,896.56/1,396,332.40
  6. Step 6: Final answer
    x = 1,027,989.26

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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.