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Finding the Fourth Proportional to 512,090.20, 766,385.70 and 449,104.60

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Solution

The fourth proportional to 512,090.20, 766,385.70 and 449,104.60 is: 672,122.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,090.20 : 766,385.70 = 449,104.60 : x
  2. Step 2: Convert to fraction form
    512,090.20/766,385.70 = 449,104.60/x
  3. Step 3: Cross multiply
    512,090.20x = 766,385.70 × 449,104.60
  4. Step 4: Simplify right side
    512,090.20x = 344,187,343,244.22
  5. Step 5: Solve for x
    x = 344,187,343,244.22/512,090.20
  6. Step 6: Final answer
    x = 672,122.50

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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.