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Finding the Third Proportional to 423,780 and 914,778

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Solution

The third proportional to 423,780 and 914,778 is: 1,974,653.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,780 : 914,778 = 914,778 : x
  2. Step 2: Convert to fraction form
    423,780/914,778 = 914,778/x
  3. Step 3: Cross multiply
    423,780x = 914,778 × 914,778
  4. Step 4: Simplify right side
    423,780x = 836,818,789,284
  5. Step 5: Solve for x
    x = 836,818,789,284/423,780
  6. Step 6: Final answer
    x = 1,974,653.80

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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.