Home / 686,266.40-1,029,399.60-187,680.80

Finding the Fourth Proportional to 686,266.40, 1,029,399.60 and 187,680.80

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Solution

The fourth proportional to 686,266.40, 1,029,399.60 and 187,680.80 is: 281,521.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,266.40 : 1,029,399.60 = 187,680.80 : x
  2. Step 2: Convert to fraction form
    686,266.40/1,029,399.60 = 187,680.80/x
  3. Step 3: Cross multiply
    686,266.40x = 1,029,399.60 × 187,680.80
  4. Step 4: Simplify right side
    686,266.40x = 193,198,540,447.68
  5. Step 5: Solve for x
    x = 193,198,540,447.68/686,266.40
  6. Step 6: Final answer
    x = 281,521.20

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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.