Home / 1,981,015.80-2,971,523.70-485,107.80

Finding the Fourth Proportional to 1,981,015.80, 2,971,523.70 and 485,107.80

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Solution

The fourth proportional to 1,981,015.80, 2,971,523.70 and 485,107.80 is: 727,661.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981,015.80 : 2,971,523.70 = 485,107.80 : x
  2. Step 2: Convert to fraction form
    1,981,015.80/2,971,523.70 = 485,107.80/x
  3. Step 3: Cross multiply
    1,981,015.80x = 2,971,523.70 × 485,107.80
  4. Step 4: Simplify right side
    1,981,015.80x = 1,441,509,324,754.86
  5. Step 5: Solve for x
    x = 1,441,509,324,754.86/1,981,015.80
  6. Step 6: Final answer
    x = 727,661.70

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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.