Home / 764,209.25-1,054,619.60-420,077

Finding the Fourth Proportional to 764,209.25, 1,054,619.60 and 420,077

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Solution

The fourth proportional to 764,209.25, 1,054,619.60 and 420,077 is: 579,712.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,209.25 : 1,054,619.60 = 420,077 : x
  2. Step 2: Convert to fraction form
    764,209.25/1,054,619.60 = 420,077/x
  3. Step 3: Cross multiply
    764,209.25x = 1,054,619.60 × 420,077
  4. Step 4: Simplify right side
    764,209.25x = 443,021,437,709.20
  5. Step 5: Solve for x
    x = 443,021,437,709.20/764,209.25
  6. Step 6: Final answer
    x = 579,712.22

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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.