Finding the Third Proportional to 391,977.75 and 831,055.75
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Solution
The third proportional to 391,977.75 and 831,055.75 is: 1,761,971.59
Step by Step Solution
- Step 1: Write the proportion equation
391,977.75 : 831,055.75 = 831,055.75 : x - Step 2: Convert to fraction form
391,977.75/831,055.75 = 831,055.75/x - Step 3: Cross multiply
391,977.75x = 831,055.75 × 831,055.75 - Step 4: Simplify right side
391,977.75x = 690,653,659,608.06 - Step 5: Solve for x
x = 690,653,659,608.06/391,977.75 - Step 6: Final answer
x = 1,761,971.59
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Why These Related Problems?
These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.