Finding the Fourth Proportional to 512,163.40, 768,245.10 and 406,409.80
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Solution
The fourth proportional to 512,163.40, 768,245.10 and 406,409.80 is: 609,614.70
Step by Step Solution
- Step 1: Write the proportion equation
512,163.40 : 768,245.10 = 406,409.80 : x - Step 2: Convert to fraction form
512,163.40/768,245.10 = 406,409.80/x - Step 3: Cross multiply
512,163.40x = 768,245.10 × 406,409.80 - Step 4: Simplify right side
512,163.40x = 312,222,337,441.98 - Step 5: Solve for x
x = 312,222,337,441.98/512,163.40 - Step 6: Final answer
x = 609,614.70
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.