Finding the Fourth Proportional to 667,748.65, 921,812.25 and 381,213.31
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Solution
The fourth proportional to 667,748.65, 921,812.25 and 381,213.31 is: 526,256.55
Step by Step Solution
- Step 1: Write the proportion equation
667,748.65 : 921,812.25 = 381,213.31 : x - Step 2: Convert to fraction form
667,748.65/921,812.25 = 381,213.31/x - Step 3: Cross multiply
667,748.65x = 921,812.25 × 381,213.31 - Step 4: Simplify right side
667,748.65x = 351,407,099,021.05 - Step 5: Solve for x
x = 351,407,099,021.05/667,748.65 - Step 6: Final answer
x = 526,256.55
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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.