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Finding the Third Proportional to 414,533 and 640,119

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Solution

The third proportional to 414,533 and 640,119 is: 988,467.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,533 : 640,119 = 640,119 : x
  2. Step 2: Convert to fraction form
    414,533/640,119 = 640,119/x
  3. Step 3: Cross multiply
    414,533x = 640,119 × 640,119
  4. Step 4: Simplify right side
    414,533x = 409,752,334,161
  5. Step 5: Solve for x
    x = 409,752,334,161/414,533
  6. Step 6: Final answer
    x = 988,467.35

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.