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Finding the Fourth Proportional to 611,771.85, 844,380.09 and 339,933.15

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Solution

The fourth proportional to 611,771.85, 844,380.09 and 339,933.15 is: 469,182.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,771.85 : 844,380.09 = 339,933.15 : x
  2. Step 2: Convert to fraction form
    611,771.85/844,380.09 = 339,933.15/x
  3. Step 3: Cross multiply
    611,771.85x = 844,380.09 × 339,933.15
  4. Step 4: Simplify right side
    611,771.85x = 287,032,783,790.98
  5. Step 5: Solve for x
    x = 287,032,783,790.98/611,771.85
  6. Step 6: Final answer
    x = 469,182.73

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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.