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Finding the Fourth Proportional to 512,216.20, 766,574.70 and 449,230.60

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Solution

The fourth proportional to 512,216.20, 766,574.70 and 449,230.60 is: 672,311.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,216.20 : 766,574.70 = 449,230.60 : x
  2. Step 2: Convert to fraction form
    512,216.20/766,574.70 = 449,230.60/x
  3. Step 3: Cross multiply
    512,216.20x = 766,574.70 × 449,230.60
  4. Step 4: Simplify right side
    512,216.20x = 344,368,812,425.82
  5. Step 5: Solve for x
    x = 344,368,812,425.82/512,216.20
  6. Step 6: Final answer
    x = 672,311.44

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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.