Home / 861,715.22-1,293,163.26-300,749.72

Finding the Fourth Proportional to 861,715.22, 1,293,163.26 and 300,749.72

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Solution

The fourth proportional to 861,715.22, 1,293,163.26 and 300,749.72 is: 451,330.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,715.22 : 1,293,163.26 = 300,749.72 : x
  2. Step 2: Convert to fraction form
    861,715.22/1,293,163.26 = 300,749.72/x
  3. Step 3: Cross multiply
    861,715.22x = 1,293,163.26 × 300,749.72
  4. Step 4: Simplify right side
    861,715.22x = 388,918,488,359.29
  5. Step 5: Solve for x
    x = 388,918,488,359.29/861,715.22
  6. Step 6: Final answer
    x = 451,330.65

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1.5x scale

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.