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Finding the Fourth Proportional to 826,686, 1,240,107.37 and 321,285.94

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Solution

The fourth proportional to 826,686, 1,240,107.37 and 321,285.94 is: 481,959.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,686 : 1,240,107.37 = 321,285.94 : x
  2. Step 2: Convert to fraction form
    826,686/1,240,107.37 = 321,285.94/x
  3. Step 3: Cross multiply
    826,686x = 1,240,107.37 × 321,285.94
  4. Step 4: Simplify right side
    826,686x = 398,429,065,143.50
  5. Step 5: Solve for x
    x = 398,429,065,143.50/826,686
  6. Step 6: Final answer
    x = 481,959.37

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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.