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Finding the Third Proportional to 382,310 and 831,072

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Solution

The third proportional to 382,310 and 831,072 is: 1,806,598.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,310 : 831,072 = 831,072 : x
  2. Step 2: Convert to fraction form
    382,310/831,072 = 831,072/x
  3. Step 3: Cross multiply
    382,310x = 831,072 × 831,072
  4. Step 4: Simplify right side
    382,310x = 690,680,669,184
  5. Step 5: Solve for x
    x = 690,680,669,184/382,310
  6. Step 6: Final answer
    x = 1,806,598.49

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.