Home / 764,597.58-1,055,171.79-420,459.90

Finding the Fourth Proportional to 764,597.58, 1,055,171.79 and 420,459.90

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Solution

The fourth proportional to 764,597.58, 1,055,171.79 and 420,459.90 is: 580,249.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,597.58 : 1,055,171.79 = 420,459.90 : x
  2. Step 2: Convert to fraction form
    764,597.58/1,055,171.79 = 420,459.90/x
  3. Step 3: Cross multiply
    764,597.58x = 1,055,171.79 × 420,459.90
  4. Step 4: Simplify right side
    764,597.58x = 443,657,425,306.22
  5. Step 5: Solve for x
    x = 443,657,425,306.22/764,597.58
  6. Step 6: Final answer
    x = 580,249.58

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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.