Home / 447,932.16-668,621.52-394,789.68

Finding the Fourth Proportional to 447,932.16, 668,621.52 and 394,789.68

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Solution

The fourth proportional to 447,932.16, 668,621.52 and 394,789.68 is: 589,296.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,932.16 : 668,621.52 = 394,789.68 : x
  2. Step 2: Convert to fraction form
    447,932.16/668,621.52 = 394,789.68/x
  3. Step 3: Cross multiply
    447,932.16x = 668,621.52 × 394,789.68
  4. Step 4: Simplify right side
    447,932.16x = 263,964,875,921.91
  5. Step 5: Solve for x
    x = 263,964,875,921.91/447,932.16
  6. Step 6: Final answer
    x = 589,296.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.