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Finding the Third Proportional to 431,521 and 908,536

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Solution

The third proportional to 431,521 and 908,536 is: 1,912,856.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,521 : 908,536 = 908,536 : x
  2. Step 2: Convert to fraction form
    431,521/908,536 = 908,536/x
  3. Step 3: Cross multiply
    431,521x = 908,536 × 908,536
  4. Step 4: Simplify right side
    431,521x = 825,437,663,296
  5. Step 5: Solve for x
    x = 825,437,663,296/431,521
  6. Step 6: Final answer
    x = 1,912,856.30

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.