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Finding the Fourth Proportional to 542,496.78, 813,789.55 and 272,486.08

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Solution

The fourth proportional to 542,496.78, 813,789.55 and 272,486.08 is: 408,751.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,496.78 : 813,789.55 = 272,486.08 : x
  2. Step 2: Convert to fraction form
    542,496.78/813,789.55 = 272,486.08/x
  3. Step 3: Cross multiply
    542,496.78x = 813,789.55 × 272,486.08
  4. Step 4: Simplify right side
    542,496.78x = 221,746,326,921.54
  5. Step 5: Solve for x
    x = 221,746,326,921.54/542,496.78
  6. Step 6: Final answer
    x = 408,751.41

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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.