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Finding the Third Proportional to 815,616 and 1,240,704

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Solution

The third proportional to 815,616 and 1,240,704 is: 1,887,342.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,616 : 1,240,704 = 1,240,704 : x
  2. Step 2: Convert to fraction form
    815,616/1,240,704 = 1,240,704/x
  3. Step 3: Cross multiply
    815,616x = 1,240,704 × 1,240,704
  4. Step 4: Simplify right side
    815,616x = 1,539,346,415,616
  5. Step 5: Solve for x
    x = 1,539,346,415,616/815,616
  6. Step 6: Final answer
    x = 1,887,342.10

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.