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Finding the Third Proportional to 270,476 and 420,464

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Solution

The third proportional to 270,476 and 420,464 is: 653,625.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,476 : 420,464 = 420,464 : x
  2. Step 2: Convert to fraction form
    270,476/420,464 = 420,464/x
  3. Step 3: Cross multiply
    270,476x = 420,464 × 420,464
  4. Step 4: Simplify right side
    270,476x = 176,789,975,296
  5. Step 5: Solve for x
    x = 176,789,975,296/270,476
  6. Step 6: Final answer
    x = 653,625.37

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.