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Finding the Fourth Proportional to 512,552.10, 768,828.15 and 486,891.30

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Solution

The fourth proportional to 512,552.10, 768,828.15 and 486,891.30 is: 730,336.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,552.10 : 768,828.15 = 486,891.30 : x
  2. Step 2: Convert to fraction form
    512,552.10/768,828.15 = 486,891.30/x
  3. Step 3: Cross multiply
    512,552.10x = 768,828.15 × 486,891.30
  4. Step 4: Simplify right side
    512,552.10x = 374,335,737,430.10
  5. Step 5: Solve for x
    x = 374,335,737,430.10/512,552.10
  6. Step 6: Final answer
    x = 730,336.95

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Similar ratio
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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.