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Finding the Third Proportional to 419,921 and 432,017

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Solution

The third proportional to 419,921 and 432,017 is: 444,461.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,921 : 432,017 = 432,017 : x
  2. Step 2: Convert to fraction form
    419,921/432,017 = 432,017/x
  3. Step 3: Cross multiply
    419,921x = 432,017 × 432,017
  4. Step 4: Simplify right side
    419,921x = 186,638,688,289
  5. Step 5: Solve for x
    x = 186,638,688,289/419,921
  6. Step 6: Final answer
    x = 444,461.43

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Why These Related Problems?

These problems maintain the same ratio (1.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.