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Finding the Fourth Proportional to 663,109.73, 994,820.11 and 263,773.25

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Solution

The fourth proportional to 663,109.73, 994,820.11 and 263,773.25 is: 395,721.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,109.73 : 994,820.11 = 263,773.25 : x
  2. Step 2: Convert to fraction form
    663,109.73/994,820.11 = 263,773.25/x
  3. Step 3: Cross multiply
    663,109.73x = 994,820.11 × 263,773.25
  4. Step 4: Simplify right side
    663,109.73x = 262,406,932,995.97
  5. Step 5: Solve for x
    x = 262,406,932,995.97/663,109.73
  6. Step 6: Final answer
    x = 395,721.74

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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.