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Finding the Third Proportional to 821,055 and 1,307,470

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Solution

The third proportional to 821,055 and 1,307,470 is: 2,082,050.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,055 : 1,307,470 = 1,307,470 : x
  2. Step 2: Convert to fraction form
    821,055/1,307,470 = 1,307,470/x
  3. Step 3: Cross multiply
    821,055x = 1,307,470 × 1,307,470
  4. Step 4: Simplify right side
    821,055x = 1,709,477,800,900
  5. Step 5: Solve for x
    x = 1,709,477,800,900/821,055
  6. Step 6: Final answer
    x = 2,082,050.29

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.