Finding the Fourth Proportional to 529,138.43, 729,516.19 and 381,839.68
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Solution
The fourth proportional to 529,138.43, 729,516.19 and 381,839.68 is: 526,437.34
Step by Step Solution
- Step 1: Write the proportion equation
529,138.43 : 729,516.19 = 381,839.68 : x - Step 2: Convert to fraction form
529,138.43/729,516.19 = 381,839.68/x - Step 3: Cross multiply
529,138.43x = 729,516.19 × 381,839.68 - Step 4: Simplify right side
529,138.43x = 278,558,227,675.23 - Step 5: Solve for x
x = 278,558,227,675.23/529,138.43 - Step 6: Final answer
x = 526,437.34
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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.