Finding the Fourth Proportional to 621,650,381.08, 858,264,757.62 and 395,716,891.42
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Solution
The fourth proportional to 621,650,381.08, 858,264,757.62 and 395,716,891.42 is: 546,335,805.84
Step by Step Solution
- Step 1: Write the proportion equation
621,650,381.08 : 858,264,757.62 = 395,716,891.42 : x - Step 2: Convert to fraction form
621,650,381.08/858,264,757.62 = 395,716,891.42/x - Step 3: Cross multiply
621,650,381.08x = 858,264,757.62 × 395,716,891.42 - Step 4: Simplify right side
621,650,381.08x = 339,629,861,900,726,144 - Step 5: Solve for x
x = 339,629,861,900,726,144/621,650,381.08 - Step 6: Final answer
x = 546,335,805.84
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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.