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Finding the Fourth Proportional to 453,876.80, 679,993.92 and 326,829.20

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Solution

The fourth proportional to 453,876.80, 679,993.92 and 326,829.20 is: 489,652.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,876.80 : 679,993.92 = 326,829.20 : x
  2. Step 2: Convert to fraction form
    453,876.80/679,993.92 = 326,829.20/x
  3. Step 3: Cross multiply
    453,876.80x = 679,993.92 × 326,829.20
  4. Step 4: Simplify right side
    453,876.80x = 222,241,868,878.46
  5. Step 5: Solve for x
    x = 222,241,868,878.46/453,876.80
  6. Step 6: Final answer
    x = 489,652.41

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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.