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Finding the Third Proportional to 379,824 and 820,560

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Solution

The third proportional to 379,824 and 820,560 is: 1,772,712.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,824 : 820,560 = 820,560 : x
  2. Step 2: Convert to fraction form
    379,824/820,560 = 820,560/x
  3. Step 3: Cross multiply
    379,824x = 820,560 × 820,560
  4. Step 4: Simplify right side
    379,824x = 673,318,713,600
  5. Step 5: Solve for x
    x = 673,318,713,600/379,824
  6. Step 6: Final answer
    x = 1,772,712.40

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.