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Finding the Third Proportional to 378,354 and 802,830

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Solution

The third proportional to 378,354 and 802,830 is: 1,703,526.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,354 : 802,830 = 802,830 : x
  2. Step 2: Convert to fraction form
    378,354/802,830 = 802,830/x
  3. Step 3: Cross multiply
    378,354x = 802,830 × 802,830
  4. Step 4: Simplify right side
    378,354x = 644,536,008,900
  5. Step 5: Solve for x
    x = 644,536,008,900/378,354
  6. Step 6: Final answer
    x = 1,703,526.35

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.