Home / 1,259,278.20-1,889,378.10-511,399.80

Finding the Fourth Proportional to 1,259,278.20, 1,889,378.10 and 511,399.80

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Solution

The fourth proportional to 1,259,278.20, 1,889,378.10 and 511,399.80 is: 767,286.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,278.20 : 1,889,378.10 = 511,399.80 : x
  2. Step 2: Convert to fraction form
    1,259,278.20/1,889,378.10 = 511,399.80/x
  3. Step 3: Cross multiply
    1,259,278.20x = 1,889,378.10 × 511,399.80
  4. Step 4: Simplify right side
    1,259,278.20x = 966,227,582,464.38
  5. Step 5: Solve for x
    x = 966,227,582,464.38/1,259,278.20
  6. Step 6: Final answer
    x = 767,286.83

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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.