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Finding the Fourth Proportional to 825,666, 1,139,418.73 and 481,435.50

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Solution

The fourth proportional to 825,666, 1,139,418.73 and 481,435.50 is: 664,380.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,666 : 1,139,418.73 = 481,435.50 : x
  2. Step 2: Convert to fraction form
    825,666/1,139,418.73 = 481,435.50/x
  3. Step 3: Cross multiply
    825,666x = 1,139,418.73 × 481,435.50
  4. Step 4: Simplify right side
    825,666x = 548,556,625,986.92
  5. Step 5: Solve for x
    x = 548,556,625,986.92/825,666
  6. Step 6: Final answer
    x = 664,380.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.