Home / 764,272.20-1,146,408.30-386,358.60

Finding the Fourth Proportional to 764,272.20, 1,146,408.30 and 386,358.60

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Solution

The fourth proportional to 764,272.20, 1,146,408.30 and 386,358.60 is: 579,537.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,272.20 : 1,146,408.30 = 386,358.60 : x
  2. Step 2: Convert to fraction form
    764,272.20/1,146,408.30 = 386,358.60/x
  3. Step 3: Cross multiply
    764,272.20x = 1,146,408.30 × 386,358.60
  4. Step 4: Simplify right side
    764,272.20x = 442,924,705,816.38
  5. Step 5: Solve for x
    x = 442,924,705,816.38/764,272.20
  6. Step 6: Final answer
    x = 579,537.90

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Similar ratio
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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.