Finding the Fourth Proportional to 436,821.40, 655,232.10 and 347,591.80
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Solution
The fourth proportional to 436,821.40, 655,232.10 and 347,591.80 is: 521,387.70
Step by Step Solution
- Step 1: Write the proportion equation
436,821.40 : 655,232.10 = 347,591.80 : x - Step 2: Convert to fraction form
436,821.40/655,232.10 = 347,591.80/x - Step 3: Cross multiply
436,821.40x = 655,232.10 × 347,591.80 - Step 4: Simplify right side
436,821.40x = 227,753,305,056.78 - Step 5: Solve for x
x = 227,753,305,056.78/436,821.40 - Step 6: Final answer
x = 521,387.70
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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.