Home / 857,261.40-1,285,406.10-324,799.80

Finding the Fourth Proportional to 857,261.40, 1,285,406.10 and 324,799.80

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Solution

The fourth proportional to 857,261.40, 1,285,406.10 and 324,799.80 is: 487,015.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,261.40 : 1,285,406.10 = 324,799.80 : x
  2. Step 2: Convert to fraction form
    857,261.40/1,285,406.10 = 324,799.80/x
  3. Step 3: Cross multiply
    857,261.40x = 1,285,406.10 × 324,799.80
  4. Step 4: Simplify right side
    857,261.40x = 417,499,644,198.78
  5. Step 5: Solve for x
    x = 417,499,644,198.78/857,261.40
  6. Step 6: Final answer
    x = 487,015.56

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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.