Finding the Fourth Proportional to 543,161.70, 814,742.55 and 318,629.70
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Solution
The fourth proportional to 543,161.70, 814,742.55 and 318,629.70 is: 477,944.55
Step by Step Solution
- Step 1: Write the proportion equation
543,161.70 : 814,742.55 = 318,629.70 : x - Step 2: Convert to fraction form
543,161.70/814,742.55 = 318,629.70/x - Step 3: Cross multiply
543,161.70x = 814,742.55 × 318,629.70 - Step 4: Simplify right side
543,161.70x = 259,601,174,283.74 - Step 5: Solve for x
x = 259,601,174,283.74/543,161.70 - Step 6: Final answer
x = 477,944.55
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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.