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Finding the Third Proportional to 708,779 and 1,515,910

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Solution

The third proportional to 708,779 and 1,515,910 is: 3,242,171.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,779 : 1,515,910 = 1,515,910 : x
  2. Step 2: Convert to fraction form
    708,779/1,515,910 = 1,515,910/x
  3. Step 3: Cross multiply
    708,779x = 1,515,910 × 1,515,910
  4. Step 4: Simplify right side
    708,779x = 2,297,983,128,100
  5. Step 5: Solve for x
    x = 2,297,983,128,100/708,779
  6. Step 6: Final answer
    x = 3,242,171.58

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.