Finding the Fourth Proportional to 642,538.18, 886,707.94 and 356,063.05
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Solution
The fourth proportional to 642,538.18, 886,707.94 and 356,063.05 is: 491,369.92
Step by Step Solution
- Step 1: Write the proportion equation
642,538.18 : 886,707.94 = 356,063.05 : x - Step 2: Convert to fraction form
642,538.18/886,707.94 = 356,063.05/x - Step 3: Cross multiply
642,538.18x = 886,707.94 × 356,063.05 - Step 4: Simplify right side
642,538.18x = 315,723,931,795.30 - Step 5: Solve for x
x = 315,723,931,795.30/642,538.18 - Step 6: Final answer
x = 491,369.92
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.