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Finding the Fourth Proportional to 611,777.80, 844,229.86 and 339,862.78

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Solution

The fourth proportional to 611,777.80, 844,229.86 and 339,862.78 is: 468,997.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,777.80 : 844,229.86 = 339,862.78 : x
  2. Step 2: Convert to fraction form
    611,777.80/844,229.86 = 339,862.78/x
  3. Step 3: Cross multiply
    611,777.80x = 844,229.86 × 339,862.78
  4. Step 4: Simplify right side
    611,777.80x = 286,922,307,178.61
  5. Step 5: Solve for x
    x = 286,922,307,178.61/611,777.80
  6. Step 6: Final answer
    x = 468,997.58

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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.