Home / 764,861.37-1,147,128.03-315,465.68

Finding the Fourth Proportional to 764,861.37, 1,147,128.03 and 315,465.68

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Solution

The fourth proportional to 764,861.37, 1,147,128.03 and 315,465.68 is: 473,130.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,861.37 : 1,147,128.03 = 315,465.68 : x
  2. Step 2: Convert to fraction form
    764,861.37/1,147,128.03 = 315,465.68/x
  3. Step 3: Cross multiply
    764,861.37x = 1,147,128.03 × 315,465.68
  4. Step 4: Simplify right side
    764,861.37x = 361,879,524,031.01
  5. Step 5: Solve for x
    x = 361,879,524,031.01/764,861.37
  6. Step 6: Final answer
    x = 473,130.87

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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.