Home / 764,683.68-1,147,164.03-315,154.35

Finding the Fourth Proportional to 764,683.68, 1,147,164.03 and 315,154.35

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Solution

The fourth proportional to 764,683.68, 1,147,164.03 and 315,154.35 is: 472,788.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,683.68 : 1,147,164.03 = 315,154.35 : x
  2. Step 2: Convert to fraction form
    764,683.68/1,147,164.03 = 315,154.35/x
  3. Step 3: Cross multiply
    764,683.68x = 1,147,164.03 × 315,154.35
  4. Step 4: Simplify right side
    764,683.68x = 361,533,734,218.03
  5. Step 5: Solve for x
    x = 361,533,734,218.03/764,683.68
  6. Step 6: Final answer
    x = 472,788.61

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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.