Finding the Fourth Proportional to 631,738,381.44, 871,782,591.36 and 349,491,246.72
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Solution
The fourth proportional to 631,738,381.44, 871,782,591.36 and 349,491,246.72 is: 482,288,861.46
Step by Step Solution
- Step 1: Write the proportion equation
631,738,381.44 : 871,782,591.36 = 349,491,246.72 : x - Step 2: Convert to fraction form
631,738,381.44/871,782,591.36 = 349,491,246.72/x - Step 3: Cross multiply
631,738,381.44x = 871,782,591.36 × 349,491,246.72 - Step 4: Simplify right side
631,738,381.44x = 304,680,384,723,198,720 - Step 5: Solve for x
x = 304,680,384,723,198,720/631,738,381.44 - Step 6: Final answer
x = 482,288,861.46
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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.