Home / 764,317.78-1,054,761.94-420,175.88

Finding the Fourth Proportional to 764,317.78, 1,054,761.94 and 420,175.88

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Solution

The fourth proportional to 764,317.78, 1,054,761.94 and 420,175.88 is: 579,844.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,317.78 : 1,054,761.94 = 420,175.88 : x
  2. Step 2: Convert to fraction form
    764,317.78/1,054,761.94 = 420,175.88/x
  3. Step 3: Cross multiply
    764,317.78x = 1,054,761.94 × 420,175.88
  4. Step 4: Simplify right side
    764,317.78x = 443,185,527,912.44
  5. Step 5: Solve for x
    x = 443,185,527,912.44/764,317.78
  6. Step 6: Final answer
    x = 579,844.59

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1.5x scale

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.