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Finding the Fourth Proportional to 453,853.75, 679,959.42 and 326,806.15

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Solution

The fourth proportional to 453,853.75, 679,959.42 and 326,806.15 is: 489,617.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,853.75 : 679,959.42 = 326,806.15 : x
  2. Step 2: Convert to fraction form
    453,853.75/679,959.42 = 326,806.15/x
  3. Step 3: Cross multiply
    453,853.75x = 679,959.42 × 326,806.15
  4. Step 4: Simplify right side
    453,853.75x = 222,214,920,206.43
  5. Step 5: Solve for x
    x = 222,214,920,206.43/453,853.75
  6. Step 6: Final answer
    x = 489,617.90

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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.