Home / 641,399.76-962,089.56-220,679.28

Finding the Fourth Proportional to 641,399.76, 962,089.56 and 220,679.28

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Solution

The fourth proportional to 641,399.76, 962,089.56 and 220,679.28 is: 331,015.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,399.76 : 962,089.56 = 220,679.28 : x
  2. Step 2: Convert to fraction form
    641,399.76/962,089.56 = 220,679.28/x
  3. Step 3: Cross multiply
    641,399.76x = 962,089.56 × 220,679.28
  4. Step 4: Simplify right side
    641,399.76x = 212,313,231,396.32
  5. Step 5: Solve for x
    x = 212,313,231,396.32/641,399.76
  6. Step 6: Final answer
    x = 331,015.45

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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.