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Finding the Third Proportional to 402,432 and 852,836

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Solution

The third proportional to 402,432 and 852,836 is: 1,807,334.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,432 : 852,836 = 852,836 : x
  2. Step 2: Convert to fraction form
    402,432/852,836 = 852,836/x
  3. Step 3: Cross multiply
    402,432x = 852,836 × 852,836
  4. Step 4: Simplify right side
    402,432x = 727,329,242,896
  5. Step 5: Solve for x
    x = 727,329,242,896/402,432
  6. Step 6: Final answer
    x = 1,807,334.51

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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.