Home / 764,692.80-1,147,039.20-658,404.60

Finding the Fourth Proportional to 764,692.80, 1,147,039.20 and 658,404.60

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Solution

The fourth proportional to 764,692.80, 1,147,039.20 and 658,404.60 is: 987,606.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,692.80 : 1,147,039.20 = 658,404.60 : x
  2. Step 2: Convert to fraction form
    764,692.80/1,147,039.20 = 658,404.60/x
  3. Step 3: Cross multiply
    764,692.80x = 1,147,039.20 × 658,404.60
  4. Step 4: Simplify right side
    764,692.80x = 755,215,885,660.32
  5. Step 5: Solve for x
    x = 755,215,885,660.32/764,692.80
  6. Step 6: Final answer
    x = 987,606.90

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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.