Home / 766,621.56-1,057,944.75-422,469.84

Finding the Fourth Proportional to 766,621.56, 1,057,944.75 and 422,469.84

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Solution

The fourth proportional to 766,621.56, 1,057,944.75 and 422,469.84 is: 583,012.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,621.56 : 1,057,944.75 = 422,469.84 : x
  2. Step 2: Convert to fraction form
    766,621.56/1,057,944.75 = 422,469.84/x
  3. Step 3: Cross multiply
    766,621.56x = 1,057,944.75 × 422,469.84
  4. Step 4: Simplify right side
    766,621.56x = 446,949,741,859.27
  5. Step 5: Solve for x
    x = 446,949,741,859.27/766,621.56
  6. Step 6: Final answer
    x = 583,012.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.