Finding the Fourth Proportional to 667,689.44, 921,477.40 and 381,252.60
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Solution
The fourth proportional to 667,689.44, 921,477.40 and 381,252.60 is: 526,166.26
Step by Step Solution
- Step 1: Write the proportion equation
667,689.44 : 921,477.40 = 381,252.60 : x - Step 2: Convert to fraction form
667,689.44/921,477.40 = 381,252.60/x - Step 3: Cross multiply
667,689.44x = 921,477.40 × 381,252.60 - Step 4: Simplify right side
667,689.44x = 351,315,654,591.24 - Step 5: Solve for x
x = 351,315,654,591.24/667,689.44 - Step 6: Final answer
x = 526,166.26
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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.