Home / 715,175.24-986,951.94-392,915.12

Finding the Fourth Proportional to 715,175.24, 986,951.94 and 392,915.12

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Solution

The fourth proportional to 715,175.24, 986,951.94 and 392,915.12 is: 542,228.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,175.24 : 986,951.94 = 392,915.12 : x
  2. Step 2: Convert to fraction form
    715,175.24/986,951.94 = 392,915.12/x
  3. Step 3: Cross multiply
    715,175.24x = 986,951.94 × 392,915.12
  4. Step 4: Simplify right side
    715,175.24x = 387,788,339,939.33
  5. Step 5: Solve for x
    x = 387,788,339,939.33/715,175.24
  6. Step 6: Final answer
    x = 542,228.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.