Finding the Fourth Proportional to 642,543.62, 886,733.07 and 387,845.06
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Solution
The fourth proportional to 642,543.62, 886,733.07 and 387,845.06 is: 535,239.99
Step by Step Solution
- Step 1: Write the proportion equation
642,543.62 : 886,733.07 = 387,845.06 : x - Step 2: Convert to fraction form
642,543.62/886,733.07 = 387,845.06/x - Step 3: Cross multiply
642,543.62x = 886,733.07 × 387,845.06 - Step 4: Simplify right side
642,543.62x = 343,915,040,738.13 - Step 5: Solve for x
x = 343,915,040,738.13/642,543.62 - Step 6: Final answer
x = 535,239.99
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.