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Finding the Third Proportional to 699,120 and 1,531,628

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Solution

The third proportional to 699,120 and 1,531,628 is: 3,355,481.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,120 : 1,531,628 = 1,531,628 : x
  2. Step 2: Convert to fraction form
    699,120/1,531,628 = 1,531,628/x
  3. Step 3: Cross multiply
    699,120x = 1,531,628 × 1,531,628
  4. Step 4: Simplify right side
    699,120x = 2,345,884,330,384
  5. Step 5: Solve for x
    x = 2,345,884,330,384/699,120
  6. Step 6: Final answer
    x = 3,355,481.65

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.