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Finding the Fourth Proportional to 611,872.33, 844,384.80 and 339,940.54

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Solution

The fourth proportional to 611,872.33, 844,384.80 and 339,940.54 is: 469,118.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,872.33 : 844,384.80 = 339,940.54 : x
  2. Step 2: Convert to fraction form
    611,872.33/844,384.80 = 339,940.54/x
  3. Step 3: Cross multiply
    611,872.33x = 844,384.80 × 339,940.54
  4. Step 4: Simplify right side
    611,872.33x = 287,040,624,879.79
  5. Step 5: Solve for x
    x = 287,040,624,879.79/611,872.33
  6. Step 6: Final answer
    x = 469,118.49

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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.