Finding the Fourth Proportional to 491,701,528.38, 678,539,913.12 and 268,678,310.52
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Solution
The fourth proportional to 491,701,528.38, 678,539,913.12 and 268,678,310.52 is: 370,771,589.99
Step by Step Solution
- Step 1: Write the proportion equation
491,701,528.38 : 678,539,913.12 = 268,678,310.52 : x - Step 2: Convert to fraction form
491,701,528.38/678,539,913.12 = 268,678,310.52/x - Step 3: Cross multiply
491,701,528.38x = 678,539,913.12 × 268,678,310.52 - Step 4: Simplify right side
491,701,528.38x = 182,308,957,477,469,184 - Step 5: Solve for x
x = 182,308,957,477,469,184/491,701,528.38 - Step 6: Final answer
x = 370,771,589.99
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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.