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Finding the Fourth Proportional to 1,766,340.24, 2,647,738.80 and 820,375.28

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Solution

The fourth proportional to 1,766,340.24, 2,647,738.80 and 820,375.28 is: 1,229,740.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,766,340.24 : 2,647,738.80 = 820,375.28 : x
  2. Step 2: Convert to fraction form
    1,766,340.24/2,647,738.80 = 820,375.28/x
  3. Step 3: Cross multiply
    1,766,340.24x = 2,647,738.80 × 820,375.28
  4. Step 4: Simplify right side
    1,766,340.24x = 2,172,139,459,416.86
  5. Step 5: Solve for x
    x = 2,172,139,459,416.86/1,766,340.24
  6. Step 6: Final answer
    x = 1,229,740.12

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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.