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Finding the Fourth Proportional to 936,807, 1,405,249.38 and 271,959

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Solution

The fourth proportional to 936,807, 1,405,249.38 and 271,959 is: 407,949.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    936,807 : 1,405,249.38 = 271,959 : x
  2. Step 2: Convert to fraction form
    936,807/1,405,249.38 = 271,959/x
  3. Step 3: Cross multiply
    936,807x = 1,405,249.38 × 271,959
  4. Step 4: Simplify right side
    936,807x = 382,170,216,135.42
  5. Step 5: Solve for x
    x = 382,170,216,135.42/936,807
  6. Step 6: Final answer
    x = 407,949.79

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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.