Home / 764,609.60-1,146,914.40-512,667.20

Finding the Fourth Proportional to 764,609.60, 1,146,914.40 and 512,667.20

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Solution

The fourth proportional to 764,609.60, 1,146,914.40 and 512,667.20 is: 769,000.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,609.60 : 1,146,914.40 = 512,667.20 : x
  2. Step 2: Convert to fraction form
    764,609.60/1,146,914.40 = 512,667.20/x
  3. Step 3: Cross multiply
    764,609.60x = 1,146,914.40 × 512,667.20
  4. Step 4: Simplify right side
    764,609.60x = 587,985,394,087.68
  5. Step 5: Solve for x
    x = 587,985,394,087.68/764,609.60
  6. Step 6: Final answer
    x = 769,000.80

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Double scale
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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.