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Finding the Third Proportional to 434,680 and 921,696

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Solution

The third proportional to 434,680 and 921,696 is: 1,954,365.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,680 : 921,696 = 921,696 : x
  2. Step 2: Convert to fraction form
    434,680/921,696 = 921,696/x
  3. Step 3: Cross multiply
    434,680x = 921,696 × 921,696
  4. Step 4: Simplify right side
    434,680x = 849,523,516,416
  5. Step 5: Solve for x
    x = 849,523,516,416/434,680
  6. Step 6: Final answer
    x = 1,954,365.32

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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.