Finding the Fourth Proportional to 493,538.84, 681,077.87 and 278,687.96
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Solution
The fourth proportional to 493,538.84, 681,077.87 and 278,687.96 is: 384,586.15
Step by Step Solution
- Step 1: Write the proportion equation
493,538.84 : 681,077.87 = 278,687.96 : x - Step 2: Convert to fraction form
493,538.84/681,077.87 = 278,687.96/x - Step 3: Cross multiply
493,538.84x = 681,077.87 × 278,687.96 - Step 4: Simplify right side
493,538.84x = 189,808,200,991.74 - Step 5: Solve for x
x = 189,808,200,991.74/493,538.84 - Step 6: Final answer
x = 384,586.15
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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.