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Finding the Third Proportional to 531,144 and 812,876

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Solution

The third proportional to 531,144 and 812,876 is: 1,244,045.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,144 : 812,876 = 812,876 : x
  2. Step 2: Convert to fraction form
    531,144/812,876 = 812,876/x
  3. Step 3: Cross multiply
    531,144x = 812,876 × 812,876
  4. Step 4: Simplify right side
    531,144x = 660,767,391,376
  5. Step 5: Solve for x
    x = 660,767,391,376/531,144
  6. Step 6: Final answer
    x = 1,244,045.67

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.