Home / 820,122.40-1,231,105.20-633,959.20

Finding the Fourth Proportional to 820,122.40, 1,231,105.20 and 633,959.20

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Solution

The fourth proportional to 820,122.40, 1,231,105.20 and 633,959.20 is: 951,651.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,122.40 : 1,231,105.20 = 633,959.20 : x
  2. Step 2: Convert to fraction form
    820,122.40/1,231,105.20 = 633,959.20/x
  3. Step 3: Cross multiply
    820,122.40x = 1,231,105.20 × 633,959.20
  4. Step 4: Simplify right side
    820,122.40x = 780,470,467,707.84
  5. Step 5: Solve for x
    x = 780,470,467,707.84/820,122.40
  6. Step 6: Final answer
    x = 951,651.20

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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.