Home / 810,475.89-1,215,713.84-311,723.25

Finding the Fourth Proportional to 810,475.89, 1,215,713.84 and 311,723.25

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Solution

The fourth proportional to 810,475.89, 1,215,713.84 and 311,723.25 is: 467,584.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,475.89 : 1,215,713.84 = 311,723.25 : x
  2. Step 2: Convert to fraction form
    810,475.89/1,215,713.84 = 311,723.25/x
  3. Step 3: Cross multiply
    810,475.89x = 1,215,713.84 × 311,723.25
  4. Step 4: Simplify right side
    810,475.89x = 378,966,267,716.16
  5. Step 5: Solve for x
    x = 378,966,267,716.16/810,475.89
  6. Step 6: Final answer
    x = 467,584.88

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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.