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Finding the Fourth Proportional to 492,687.39, 680,017.44 and 320,305.32

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Solution

The fourth proportional to 492,687.39, 680,017.44 and 320,305.32 is: 442,092.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,687.39 : 680,017.44 = 320,305.32 : x
  2. Step 2: Convert to fraction form
    492,687.39/680,017.44 = 320,305.32/x
  3. Step 3: Cross multiply
    492,687.39x = 680,017.44 × 320,305.32
  4. Step 4: Simplify right side
    492,687.39x = 217,813,203,724.78
  5. Step 5: Solve for x
    x = 217,813,203,724.78/492,687.39
  6. Step 6: Final answer
    x = 442,092.10

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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.