Finding the Third Proportional to 639,259 and 1,378,149
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Solution
The third proportional to 639,259 and 1,378,149 is: 2,971,087.88
Step by Step Solution
- Step 1: Write the proportion equation
639,259 : 1,378,149 = 1,378,149 : x - Step 2: Convert to fraction form
639,259/1,378,149 = 1,378,149/x - Step 3: Cross multiply
639,259x = 1,378,149 × 1,378,149 - Step 4: Simplify right side
639,259x = 1,899,294,666,201 - Step 5: Solve for x
x = 1,899,294,666,201/639,259 - Step 6: Final answer
x = 2,971,087.88
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Why These Related Problems?
These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.