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Finding the Third Proportional to 475,520 and 990,880

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Solution

The third proportional to 475,520 and 990,880 is: 2,064,777.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,520 : 990,880 = 990,880 : x
  2. Step 2: Convert to fraction form
    475,520/990,880 = 990,880/x
  3. Step 3: Cross multiply
    475,520x = 990,880 × 990,880
  4. Step 4: Simplify right side
    475,520x = 981,843,174,400
  5. Step 5: Solve for x
    x = 981,843,174,400/475,520
  6. Step 6: Final answer
    x = 2,064,777.87

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.