Home / 810,507.24-1,215,747.42-311,979.24

Finding the Fourth Proportional to 810,507.24, 1,215,747.42 and 311,979.24

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Solution

The fourth proportional to 810,507.24, 1,215,747.42 and 311,979.24 is: 467,963.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,507.24 : 1,215,747.42 = 311,979.24 : x
  2. Step 2: Convert to fraction form
    810,507.24/1,215,747.42 = 311,979.24/x
  3. Step 3: Cross multiply
    810,507.24x = 1,215,747.42 × 311,979.24
  4. Step 4: Simplify right side
    810,507.24x = 379,287,956,123.56
  5. Step 5: Solve for x
    x = 379,287,956,123.56/810,507.24
  6. Step 6: Final answer
    x = 467,963.69

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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.