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Finding the Fourth Proportional to 481,456.52, 664,363.68 and 287,825.96

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Solution

The fourth proportional to 481,456.52, 664,363.68 and 287,825.96 is: 397,172.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,456.52 : 664,363.68 = 287,825.96 : x
  2. Step 2: Convert to fraction form
    481,456.52/664,363.68 = 287,825.96/x
  3. Step 3: Cross multiply
    481,456.52x = 664,363.68 × 287,825.96
  4. Step 4: Simplify right side
    481,456.52x = 191,221,113,985.13
  5. Step 5: Solve for x
    x = 191,221,113,985.13/481,456.52
  6. Step 6: Final answer
    x = 397,172.14

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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.