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Finding the Fourth Proportional to 801,185, 1,105,635.30 and 443,489

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Solution

The fourth proportional to 801,185, 1,105,635.30 and 443,489 is: 612,014.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,185 : 1,105,635.30 = 443,489 : x
  2. Step 2: Convert to fraction form
    801,185/1,105,635.30 = 443,489/x
  3. Step 3: Cross multiply
    801,185x = 1,105,635.30 × 443,489
  4. Step 4: Simplify right side
    801,185x = 490,337,093,561.70
  5. Step 5: Solve for x
    x = 490,337,093,561.70/801,185
  6. Step 6: Final answer
    x = 612,014.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.