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Finding the Third Proportional to 454,476 and 702,990

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Solution

The third proportional to 454,476 and 702,990 is: 1,087,395.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,476 : 702,990 = 702,990 : x
  2. Step 2: Convert to fraction form
    454,476/702,990 = 702,990/x
  3. Step 3: Cross multiply
    454,476x = 702,990 × 702,990
  4. Step 4: Simplify right side
    454,476x = 494,194,940,100
  5. Step 5: Solve for x
    x = 494,194,940,100/454,476
  6. Step 6: Final answer
    x = 1,087,395.02

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.