Home / 1,660,890.60-2,489,367.60-861,760.80

Finding the Fourth Proportional to 1,660,890.60, 2,489,367.60 and 861,760.80

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Solution

The fourth proportional to 1,660,890.60, 2,489,367.60 and 861,760.80 is: 1,291,619.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660,890.60 : 2,489,367.60 = 861,760.80 : x
  2. Step 2: Convert to fraction form
    1,660,890.60/2,489,367.60 = 861,760.80/x
  3. Step 3: Cross multiply
    1,660,890.60x = 2,489,367.60 × 861,760.80
  4. Step 4: Simplify right side
    1,660,890.60x = 2,145,239,414,470.08
  5. Step 5: Solve for x
    x = 2,145,239,414,470.08/1,660,890.60
  6. Step 6: Final answer
    x = 1,291,619.94

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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.