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Finding the Fourth Proportional to 548,610.40, 823,693.20 and 338,658.40

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Solution

The fourth proportional to 548,610.40, 823,693.20 and 338,658.40 is: 508,467.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,610.40 : 823,693.20 = 338,658.40 : x
  2. Step 2: Convert to fraction form
    548,610.40/823,693.20 = 338,658.40/x
  3. Step 3: Cross multiply
    548,610.40x = 823,693.20 × 338,658.40
  4. Step 4: Simplify right side
    548,610.40x = 278,950,621,202.88
  5. Step 5: Solve for x
    x = 278,950,621,202.88/548,610.40
  6. Step 6: Final answer
    x = 508,467.61

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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.