Home / 686,754.72-1,030,279.71-231,391.20

Finding the Fourth Proportional to 686,754.72, 1,030,279.71 and 231,391.20

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Solution

The fourth proportional to 686,754.72, 1,030,279.71 and 231,391.20 is: 347,136.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,754.72 : 1,030,279.71 = 231,391.20 : x
  2. Step 2: Convert to fraction form
    686,754.72/1,030,279.71 = 231,391.20/x
  3. Step 3: Cross multiply
    686,754.72x = 1,030,279.71 × 231,391.20
  4. Step 4: Simplify right side
    686,754.72x = 238,397,658,432.55
  5. Step 5: Solve for x
    x = 238,397,658,432.55/686,754.72
  6. Step 6: Final answer
    x = 347,136.54

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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.