Home / 809,138.21-1,213,707.92-276,663.24

Finding the Fourth Proportional to 809,138.21, 1,213,707.92 and 276,663.24

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Solution

The fourth proportional to 809,138.21, 1,213,707.92 and 276,663.24 is: 414,995.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,138.21 : 1,213,707.92 = 276,663.24 : x
  2. Step 2: Convert to fraction form
    809,138.21/1,213,707.92 = 276,663.24/x
  3. Step 3: Cross multiply
    809,138.21x = 1,213,707.92 × 276,663.24
  4. Step 4: Simplify right side
    809,138.21x = 335,788,364,177.55
  5. Step 5: Solve for x
    x = 335,788,364,177.55/809,138.21
  6. Step 6: Final answer
    x = 414,995.07

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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.