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Finding the Fourth Proportional to 800,196.80, 1,198,912.80 and 675,780.80

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Solution

The fourth proportional to 800,196.80, 1,198,912.80 and 675,780.80 is: 1,012,503.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,196.80 : 1,198,912.80 = 675,780.80 : x
  2. Step 2: Convert to fraction form
    800,196.80/1,198,912.80 = 675,780.80/x
  3. Step 3: Cross multiply
    800,196.80x = 1,198,912.80 × 675,780.80
  4. Step 4: Simplify right side
    800,196.80x = 810,202,251,114.24
  5. Step 5: Solve for x
    x = 810,202,251,114.24/800,196.80
  6. Step 6: Final answer
    x = 1,012,503.74

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1.5x scale

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.