Home / 821,235.18-1,231,855.62-252,612.42

Finding the Fourth Proportional to 821,235.18, 1,231,855.62 and 252,612.42

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Solution

The fourth proportional to 821,235.18, 1,231,855.62 and 252,612.42 is: 378,919.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,235.18 : 1,231,855.62 = 252,612.42 : x
  2. Step 2: Convert to fraction form
    821,235.18/1,231,855.62 = 252,612.42/x
  3. Step 3: Cross multiply
    821,235.18x = 1,231,855.62 × 252,612.42
  4. Step 4: Simplify right side
    821,235.18x = 311,182,029,258.80
  5. Step 5: Solve for x
    x = 311,182,029,258.80/821,235.18
  6. Step 6: Final answer
    x = 378,919.51

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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.