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Finding the Fourth Proportional to 626,410.84, 864,449.22 and 339,930.85

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Solution

The fourth proportional to 626,410.84, 864,449.22 and 339,930.85 is: 469,105.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,410.84 : 864,449.22 = 339,930.85 : x
  2. Step 2: Convert to fraction form
    626,410.84/864,449.22 = 339,930.85/x
  3. Step 3: Cross multiply
    626,410.84x = 864,449.22 × 339,930.85
  4. Step 4: Simplify right side
    626,410.84x = 293,852,958,136.44
  5. Step 5: Solve for x
    x = 293,852,958,136.44/626,410.84
  6. Step 6: Final answer
    x = 469,105.80

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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.