Home / 479,313.38-661,229.55-285,612.39

Finding the Fourth Proportional to 479,313.38, 661,229.55 and 285,612.39

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Solution

The fourth proportional to 479,313.38, 661,229.55 and 285,612.39 is: 394,012.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,313.38 : 661,229.55 = 285,612.39 : x
  2. Step 2: Convert to fraction form
    479,313.38/661,229.55 = 285,612.39/x
  3. Step 3: Cross multiply
    479,313.38x = 661,229.55 × 285,612.39
  4. Step 4: Simplify right side
    479,313.38x = 188,855,352,114.13
  5. Step 5: Solve for x
    x = 188,855,352,114.13/479,313.38
  6. Step 6: Final answer
    x = 394,012.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.