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Finding the Third Proportional to 402,574 and 822,628

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Solution

The third proportional to 402,574 and 822,628 is: 1,680,974.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,574 : 822,628 = 822,628 : x
  2. Step 2: Convert to fraction form
    402,574/822,628 = 822,628/x
  3. Step 3: Cross multiply
    402,574x = 822,628 × 822,628
  4. Step 4: Simplify right side
    402,574x = 676,716,826,384
  5. Step 5: Solve for x
    x = 676,716,826,384/402,574
  6. Step 6: Final answer
    x = 1,680,974.99

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.