Home / 666,979.45-1,000,471.53-161,540.76

Finding the Fourth Proportional to 666,979.45, 1,000,471.53 and 161,540.76

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Solution

The fourth proportional to 666,979.45, 1,000,471.53 and 161,540.76 is: 242,311.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,979.45 : 1,000,471.53 = 161,540.76 : x
  2. Step 2: Convert to fraction form
    666,979.45/1,000,471.53 = 161,540.76/x
  3. Step 3: Cross multiply
    666,979.45x = 1,000,471.53 × 161,540.76
  4. Step 4: Simplify right side
    666,979.45x = 161,616,931,314.56
  5. Step 5: Solve for x
    x = 161,616,931,314.56/666,979.45
  6. Step 6: Final answer
    x = 242,311.71

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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.