Home / 512,822.64-769,326.90-256,788.72

Finding the Fourth Proportional to 512,822.64, 769,326.90 and 256,788.72

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Solution

The fourth proportional to 512,822.64, 769,326.90 and 256,788.72 is: 385,229.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,822.64 : 769,326.90 = 256,788.72 : x
  2. Step 2: Convert to fraction form
    512,822.64/769,326.90 = 256,788.72/x
  3. Step 3: Cross multiply
    512,822.64x = 769,326.90 × 256,788.72
  4. Step 4: Simplify right side
    512,822.64x = 197,554,469,912.57
  5. Step 5: Solve for x
    x = 197,554,469,912.57/512,822.64
  6. Step 6: Final answer
    x = 385,229.62

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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.