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Finding the Third Proportional to 556,638 and 1,240,770

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Solution

The third proportional to 556,638 and 1,240,770 is: 2,765,729.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,638 : 1,240,770 = 1,240,770 : x
  2. Step 2: Convert to fraction form
    556,638/1,240,770 = 1,240,770/x
  3. Step 3: Cross multiply
    556,638x = 1,240,770 × 1,240,770
  4. Step 4: Simplify right side
    556,638x = 1,539,510,192,900
  5. Step 5: Solve for x
    x = 1,539,510,192,900/556,638
  6. Step 6: Final answer
    x = 2,765,729.60

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.