Finding the Fourth Proportional to 667,761.90, 921,830.60 and 381,226.62
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Solution
The fourth proportional to 667,761.90, 921,830.60 and 381,226.62 is: 526,274.95
Step by Step Solution
- Step 1: Write the proportion equation
667,761.90 : 921,830.60 = 381,226.62 : x - Step 2: Convert to fraction form
667,761.90/921,830.60 = 381,226.62/x - Step 3: Cross multiply
667,761.90x = 921,830.60 × 381,226.62 - Step 4: Simplify right side
667,761.90x = 351,426,363,850.57 - Step 5: Solve for x
x = 351,426,363,850.57/667,761.90 - Step 6: Final answer
x = 526,274.95
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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.