Finding the Fourth Proportional to 398,523.12, 553,735.84 and 394,362.96
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Solution
The fourth proportional to 398,523.12, 553,735.84 and 394,362.96 is: 547,955.42
Step by Step Solution
- Step 1: Write the proportion equation
398,523.12 : 553,735.84 = 394,362.96 : x - Step 2: Convert to fraction form
398,523.12/553,735.84 = 394,362.96/x - Step 3: Cross multiply
398,523.12x = 553,735.84 × 394,362.96 - Step 4: Simplify right side
398,523.12x = 218,372,904,920.49 - Step 5: Solve for x
x = 218,372,904,920.49/398,523.12 - Step 6: Final answer
x = 547,955.42
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.