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Finding the Fourth Proportional to 451,343, 672,979.36 and 438,942.71

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Solution

The fourth proportional to 451,343, 672,979.36 and 438,942.71 is: 654,489.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,343 : 672,979.36 = 438,942.71 : x
  2. Step 2: Convert to fraction form
    451,343/672,979.36 = 438,942.71/x
  3. Step 3: Cross multiply
    451,343x = 672,979.36 × 438,942.71
  4. Step 4: Simplify right side
    451,343x = 295,399,384,052.47
  5. Step 5: Solve for x
    x = 295,399,384,052.47/451,343
  6. Step 6: Final answer
    x = 654,489.79

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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.