Home / 657,634.20-986,451.30-445,057.80

Finding the Fourth Proportional to 657,634.20, 986,451.30 and 445,057.80

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Solution

The fourth proportional to 657,634.20, 986,451.30 and 445,057.80 is: 667,586.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,634.20 : 986,451.30 = 445,057.80 : x
  2. Step 2: Convert to fraction form
    657,634.20/986,451.30 = 445,057.80/x
  3. Step 3: Cross multiply
    657,634.20x = 986,451.30 × 445,057.80
  4. Step 4: Simplify right side
    657,634.20x = 439,027,845,385.14
  5. Step 5: Solve for x
    x = 439,027,845,385.14/657,634.20
  6. Step 6: Final answer
    x = 667,586.70

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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.