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Finding the Fourth Proportional to 489,252.90, 733,879.35 and 320,853.90

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Solution

The fourth proportional to 489,252.90, 733,879.35 and 320,853.90 is: 481,280.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,252.90 : 733,879.35 = 320,853.90 : x
  2. Step 2: Convert to fraction form
    489,252.90/733,879.35 = 320,853.90/x
  3. Step 3: Cross multiply
    489,252.90x = 733,879.35 × 320,853.90
  4. Step 4: Simplify right side
    489,252.90x = 235,468,051,576.97
  5. Step 5: Solve for x
    x = 235,468,051,576.97/489,252.90
  6. Step 6: Final answer
    x = 481,280.85

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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.