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Finding the Fourth Proportional to 611,759.82, 844,363.50 and 339,921.12

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Solution

The fourth proportional to 611,759.82, 844,363.50 and 339,921.12 is: 469,166.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,759.82 : 844,363.50 = 339,921.12 : x
  2. Step 2: Convert to fraction form
    611,759.82/844,363.50 = 339,921.12/x
  3. Step 3: Cross multiply
    611,759.82x = 844,363.50 × 339,921.12
  4. Step 4: Simplify right side
    611,759.82x = 287,016,986,607.12
  5. Step 5: Solve for x
    x = 287,016,986,607.12/611,759.82
  6. Step 6: Final answer
    x = 469,166.13

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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.