Finding the Fourth Proportional to 667,770.75, 921,540.57 and 409,790.19
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Solution
The fourth proportional to 667,770.75, 921,540.57 and 409,790.19 is: 565,520.85
Step by Step Solution
- Step 1: Write the proportion equation
667,770.75 : 921,540.57 = 409,790.19 : x - Step 2: Convert to fraction form
667,770.75/921,540.57 = 409,790.19/x - Step 3: Cross multiply
667,770.75x = 921,540.57 × 409,790.19 - Step 4: Simplify right side
667,770.75x = 377,638,285,273.01 - Step 5: Solve for x
x = 377,638,285,273.01/667,770.75 - Step 6: Final answer
x = 565,520.85
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1.5x scale
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.