Home / 641,400.26-962,090.31-220,679.78

Finding the Fourth Proportional to 641,400.26, 962,090.31 and 220,679.78

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Solution

The fourth proportional to 641,400.26, 962,090.31 and 220,679.78 is: 331,016.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,400.26 : 962,090.31 = 220,679.78 : x
  2. Step 2: Convert to fraction form
    641,400.26/962,090.31 = 220,679.78/x
  3. Step 3: Cross multiply
    641,400.26x = 962,090.31 × 220,679.78
  4. Step 4: Simplify right side
    641,400.26x = 212,313,877,950.93
  5. Step 5: Solve for x
    x = 212,313,877,950.93/641,400.26
  6. Step 6: Final answer
    x = 331,016.20

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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.