Finding the Third Proportional to 319,989 and 691,221.75
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Solution
The third proportional to 319,989 and 691,221.75 is: 1,493,137.29
Step by Step Solution
- Step 1: Write the proportion equation
319,989 : 691,221.75 = 691,221.75 : x - Step 2: Convert to fraction form
319,989/691,221.75 = 691,221.75/x - Step 3: Cross multiply
319,989x = 691,221.75 × 691,221.75 - Step 4: Simplify right side
319,989x = 477,787,507,673.06 - Step 5: Solve for x
x = 477,787,507,673.06/319,989 - Step 6: Final answer
x = 1,493,137.29
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These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.