Home / 987,863.10-1,481,681.45-258,456.73

Finding the Fourth Proportional to 987,863.10, 1,481,681.45 and 258,456.73

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Solution

The fourth proportional to 987,863.10, 1,481,681.45 and 258,456.73 is: 387,655.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,863.10 : 1,481,681.45 = 258,456.73 : x
  2. Step 2: Convert to fraction form
    987,863.10/1,481,681.45 = 258,456.73/x
  3. Step 3: Cross multiply
    987,863.10x = 1,481,681.45 × 258,456.73
  4. Step 4: Simplify right side
    987,863.10x = 382,950,542,468.66
  5. Step 5: Solve for x
    x = 382,950,542,468.66/987,863.10
  6. Step 6: Final answer
    x = 387,655.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.