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Finding the Fourth Proportional to 611,974.44, 915,997.14 and 326,952.72

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Solution

The fourth proportional to 611,974.44, 915,997.14 and 326,952.72 is: 489,379.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,974.44 : 915,997.14 = 326,952.72 : x
  2. Step 2: Convert to fraction form
    611,974.44/915,997.14 = 326,952.72/x
  3. Step 3: Cross multiply
    611,974.44x = 915,997.14 × 326,952.72
  4. Step 4: Simplify right side
    611,974.44x = 299,487,756,435.22
  5. Step 5: Solve for x
    x = 299,487,756,435.22/611,974.44
  6. Step 6: Final answer
    x = 489,379.52

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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.