Finding the Fourth Proportional to 667,748.84, 921,459.12 and 381,212.96
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Solution
The fourth proportional to 667,748.84, 921,459.12 and 381,212.96 is: 526,054.32
Step by Step Solution
- Step 1: Write the proportion equation
667,748.84 : 921,459.12 = 381,212.96 : x - Step 2: Convert to fraction form
667,748.84/921,459.12 = 381,212.96/x - Step 3: Cross multiply
667,748.84x = 921,459.12 × 381,212.96 - Step 4: Simplify right side
667,748.84x = 351,272,158,654.20 - Step 5: Solve for x
x = 351,272,158,654.20/667,748.84 - Step 6: Final answer
x = 526,054.32
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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.