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Finding the Third Proportional to 245,665 and 520,855

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Solution

The third proportional to 245,665 and 520,855 is: 1,104,308.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,665 : 520,855 = 520,855 : x
  2. Step 2: Convert to fraction form
    245,665/520,855 = 520,855/x
  3. Step 3: Cross multiply
    245,665x = 520,855 × 520,855
  4. Step 4: Simplify right side
    245,665x = 271,289,931,025
  5. Step 5: Solve for x
    x = 271,289,931,025/245,665
  6. Step 6: Final answer
    x = 1,104,308.43

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.