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Finding the Fourth Proportional to 481,073.49, 663,836.33 and 287,442.66

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Solution

The fourth proportional to 481,073.49, 663,836.33 and 287,442.66 is: 396,643.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,073.49 : 663,836.33 = 287,442.66 : x
  2. Step 2: Convert to fraction form
    481,073.49/663,836.33 = 287,442.66/x
  3. Step 3: Cross multiply
    481,073.49x = 663,836.33 × 287,442.66
  4. Step 4: Simplify right side
    481,073.49x = 190,814,879,062.62
  5. Step 5: Solve for x
    x = 190,814,879,062.62/481,073.49
  6. Step 6: Final answer
    x = 396,643.93

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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.