Home / 1,086,668.40-1,628,447.40-800,122.80

Finding the Fourth Proportional to 1,086,668.40, 1,628,447.40 and 800,122.80

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Solution

The fourth proportional to 1,086,668.40, 1,628,447.40 and 800,122.80 is: 1,199,039.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,668.40 : 1,628,447.40 = 800,122.80 : x
  2. Step 2: Convert to fraction form
    1,086,668.40/1,628,447.40 = 800,122.80/x
  3. Step 3: Cross multiply
    1,086,668.40x = 1,628,447.40 × 800,122.80
  4. Step 4: Simplify right side
    1,086,668.40x = 1,302,957,893,340.72
  5. Step 5: Solve for x
    x = 1,302,957,893,340.72/1,086,668.40
  6. Step 6: Final answer
    x = 1,199,039.09

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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.