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Finding the Fourth Proportional to 611,777.64, 844,388.18 and 339,939

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Solution

The fourth proportional to 611,777.64, 844,388.18 and 339,939 is: 469,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,777.64 : 844,388.18 = 339,939 : x
  2. Step 2: Convert to fraction form
    611,777.64/844,388.18 = 339,939/x
  3. Step 3: Cross multiply
    611,777.64x = 844,388.18 × 339,939
  4. Step 4: Simplify right side
    611,777.64x = 287,040,473,521.02
  5. Step 5: Solve for x
    x = 287,040,473,521.02/611,777.64
  6. Step 6: Final answer
    x = 469,190.85

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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.