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Finding the Third Proportional to 421,582 and 913,706

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Solution

The third proportional to 421,582 and 913,706 is: 1,980,299.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,582 : 913,706 = 913,706 : x
  2. Step 2: Convert to fraction form
    421,582/913,706 = 913,706/x
  3. Step 3: Cross multiply
    421,582x = 913,706 × 913,706
  4. Step 4: Simplify right side
    421,582x = 834,858,654,436
  5. Step 5: Solve for x
    x = 834,858,654,436/421,582
  6. Step 6: Final answer
    x = 1,980,299.57

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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.