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Finding the Fourth Proportional to 512,999.20, 769,498.80 and 246,622.60

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Solution

The fourth proportional to 512,999.20, 769,498.80 and 246,622.60 is: 369,933.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,999.20 : 769,498.80 = 246,622.60 : x
  2. Step 2: Convert to fraction form
    512,999.20/769,498.80 = 246,622.60/x
  3. Step 3: Cross multiply
    512,999.20x = 769,498.80 × 246,622.60
  4. Step 4: Simplify right side
    512,999.20x = 189,775,794,752.88
  5. Step 5: Solve for x
    x = 189,775,794,752.88/512,999.20
  6. Step 6: Final answer
    x = 369,933.90

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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.