Home / 1,288,862.28-1,933,840.14-689,668

Finding the Fourth Proportional to 1,288,862.28, 1,933,840.14 and 689,668

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Solution

The fourth proportional to 1,288,862.28, 1,933,840.14 and 689,668 is: 1,034,794.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,862.28 : 1,933,840.14 = 689,668 : x
  2. Step 2: Convert to fraction form
    1,288,862.28/1,933,840.14 = 689,668/x
  3. Step 3: Cross multiply
    1,288,862.28x = 1,933,840.14 × 689,668
  4. Step 4: Simplify right side
    1,288,862.28x = 1,333,707,661,673.52
  5. Step 5: Solve for x
    x = 1,333,707,661,673.52/1,288,862.28
  6. Step 6: Final answer
    x = 1,034,794.55

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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.