Finding the Third Proportional to 348,408.84 and 490,639.78
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Solution
The third proportional to 348,408.84 and 490,639.78 is: 690,933.65
Step by Step Solution
- Step 1: Write the proportion equation
348,408.84 : 490,639.78 = 490,639.78 : x - Step 2: Convert to fraction form
348,408.84/490,639.78 = 490,639.78/x - Step 3: Cross multiply
348,408.84x = 490,639.78 × 490,639.78 - Step 4: Simplify right side
348,408.84x = 240,727,394,945.05 - Step 5: Solve for x
x = 240,727,394,945.05/348,408.84 - Step 6: Final answer
x = 690,933.65
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These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.