Home / 669,982.86-1,005,129.75-220,687.62

Finding the Fourth Proportional to 669,982.86, 1,005,129.75 and 220,687.62

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Solution

The fourth proportional to 669,982.86, 1,005,129.75 and 220,687.62 is: 331,082.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,982.86 : 1,005,129.75 = 220,687.62 : x
  2. Step 2: Convert to fraction form
    669,982.86/1,005,129.75 = 220,687.62/x
  3. Step 3: Cross multiply
    669,982.86x = 1,005,129.75 × 220,687.62
  4. Step 4: Simplify right side
    669,982.86x = 221,819,692,318.70
  5. Step 5: Solve for x
    x = 221,819,692,318.70/669,982.86
  6. Step 6: Final answer
    x = 331,082.64

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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.