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Finding the Third Proportional to 356,624 and 777,220

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Solution

The third proportional to 356,624 and 777,220 is: 1,693,859.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,624 : 777,220 = 777,220 : x
  2. Step 2: Convert to fraction form
    356,624/777,220 = 777,220/x
  3. Step 3: Cross multiply
    356,624x = 777,220 × 777,220
  4. Step 4: Simplify right side
    356,624x = 604,070,928,400
  5. Step 5: Solve for x
    x = 604,070,928,400/356,624
  6. Step 6: Final answer
    x = 1,693,859.44

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.