Home / 818,610.72-1,228,112.71-313,163.43

Finding the Fourth Proportional to 818,610.72, 1,228,112.71 and 313,163.43

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Solution

The fourth proportional to 818,610.72, 1,228,112.71 and 313,163.43 is: 469,820.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,610.72 : 1,228,112.71 = 313,163.43 : x
  2. Step 2: Convert to fraction form
    818,610.72/1,228,112.71 = 313,163.43/x
  3. Step 3: Cross multiply
    818,610.72x = 1,228,112.71 × 313,163.43
  4. Step 4: Simplify right side
    818,610.72x = 384,599,987,124.38
  5. Step 5: Solve for x
    x = 384,599,987,124.38/818,610.72
  6. Step 6: Final answer
    x = 469,820.36

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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.