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Finding the Fourth Proportional to 505,912.20, 759,743.10 and 269,716.20

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Solution

The fourth proportional to 505,912.20, 759,743.10 and 269,716.20 is: 405,040.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,912.20 : 759,743.10 = 269,716.20 : x
  2. Step 2: Convert to fraction form
    505,912.20/759,743.10 = 269,716.20/x
  3. Step 3: Cross multiply
    505,912.20x = 759,743.10 × 269,716.20
  4. Step 4: Simplify right side
    505,912.20x = 204,915,021,908.22
  5. Step 5: Solve for x
    x = 204,915,021,908.22/505,912.20
  6. Step 6: Final answer
    x = 405,040.68

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1.5x scale

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.