Home / 512,473.68-766,939.05-320,280.12

Finding the Fourth Proportional to 512,473.68, 766,939.05 and 320,280.12

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Solution

The fourth proportional to 512,473.68, 766,939.05 and 320,280.12 is: 479,313.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,473.68 : 766,939.05 = 320,280.12 : x
  2. Step 2: Convert to fraction form
    512,473.68/766,939.05 = 320,280.12/x
  3. Step 3: Cross multiply
    512,473.68x = 766,939.05 × 320,280.12
  4. Step 4: Simplify right side
    512,473.68x = 245,635,330,966.69
  5. Step 5: Solve for x
    x = 245,635,330,966.69/512,473.68
  6. Step 6: Final answer
    x = 479,313.07

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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.