Finding the Fourth Proportional to 493,721.46, 681,336.09 and 278,861.94
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Solution
The fourth proportional to 493,721.46, 681,336.09 and 278,861.94 is: 384,829.75
Step by Step Solution
- Step 1: Write the proportion equation
493,721.46 : 681,336.09 = 278,861.94 : x - Step 2: Convert to fraction form
493,721.46/681,336.09 = 278,861.94/x - Step 3: Cross multiply
493,721.46x = 681,336.09 × 278,861.94 - Step 4: Simplify right side
493,721.46x = 189,998,703,849.42 - Step 5: Solve for x
x = 189,998,703,849.42/493,721.46 - Step 6: Final answer
x = 384,829.75
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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.