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Finding the Third Proportional to 415,605 and 908,970

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Solution

The third proportional to 415,605 and 908,970 is: 1,988,008.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,605 : 908,970 = 908,970 : x
  2. Step 2: Convert to fraction form
    415,605/908,970 = 908,970/x
  3. Step 3: Cross multiply
    415,605x = 908,970 × 908,970
  4. Step 4: Simplify right side
    415,605x = 826,226,460,900
  5. Step 5: Solve for x
    x = 826,226,460,900/415,605
  6. Step 6: Final answer
    x = 1,988,008.95

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.