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Finding the Fourth Proportional to 481,067.92, 663,828.65 and 287,437.07

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Solution

The fourth proportional to 481,067.92, 663,828.65 and 287,437.07 is: 396,636.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,067.92 : 663,828.65 = 287,437.07 : x
  2. Step 2: Convert to fraction form
    481,067.92/663,828.65 = 287,437.07/x
  3. Step 3: Cross multiply
    481,067.92x = 663,828.65 × 287,437.07
  4. Step 4: Simplify right side
    481,067.92x = 190,808,962,138.06
  5. Step 5: Solve for x
    x = 190,808,962,138.06/481,067.92
  6. Step 6: Final answer
    x = 396,636.22

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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.