Home / 764,665.68-1,147,137.03-315,136.34

Finding the Fourth Proportional to 764,665.68, 1,147,137.03 and 315,136.34

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Solution

The fourth proportional to 764,665.68, 1,147,137.03 and 315,136.34 is: 472,761.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,665.68 : 1,147,137.03 = 315,136.34 : x
  2. Step 2: Convert to fraction form
    764,665.68/1,147,137.03 = 315,136.34/x
  3. Step 3: Cross multiply
    764,665.68x = 1,147,137.03 × 315,136.34
  4. Step 4: Simplify right side
    764,665.68x = 361,504,559,376.99
  5. Step 5: Solve for x
    x = 361,504,559,376.99/764,665.68
  6. Step 6: Final answer
    x = 472,761.59

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Double scale
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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.