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Finding the Third Proportional to 728,419.50 and 1,102,788

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Solution

The third proportional to 728,419.50 and 1,102,788 is: 1,669,561.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,419.50 : 1,102,788 = 1,102,788 : x
  2. Step 2: Convert to fraction form
    728,419.50/1,102,788 = 1,102,788/x
  3. Step 3: Cross multiply
    728,419.50x = 1,102,788 × 1,102,788
  4. Step 4: Simplify right side
    728,419.50x = 1,216,141,372,944
  5. Step 5: Solve for x
    x = 1,216,141,372,944/728,419.50
  6. Step 6: Final answer
    x = 1,669,561.80

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.