Home / 1,660,891.60-2,489,369.10-861,761.80

Finding the Fourth Proportional to 1,660,891.60, 2,489,369.10 and 861,761.80

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Solution

The fourth proportional to 1,660,891.60, 2,489,369.10 and 861,761.80 is: 1,291,621.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660,891.60 : 2,489,369.10 = 861,761.80 : x
  2. Step 2: Convert to fraction form
    1,660,891.60/2,489,369.10 = 861,761.80/x
  3. Step 3: Cross multiply
    1,660,891.60x = 2,489,369.10 × 861,761.80
  4. Step 4: Simplify right side
    1,660,891.60x = 2,145,243,196,480.38
  5. Step 5: Solve for x
    x = 2,145,243,196,480.38/1,660,891.60
  6. Step 6: Final answer
    x = 1,291,621.44

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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.