Finding the Fourth Proportional to 378,398,800,742.28, 522,193,600,961.35 and 215,826,677,855.18
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Solution
The fourth proportional to 378,398,800,742.28, 522,193,600,961.35 and 215,826,677,855.18 is: 297,842,672,523.38
Step by Step Solution
- Step 1: Write the proportion equation
378,398,800,742.28 : 522,193,600,961.35 = 215,826,677,855.18 : x - Step 2: Convert to fraction form
378,398,800,742.28/522,193,600,961.35 = 215,826,677,855.18/x - Step 3: Cross multiply
378,398,800,742.28x = 522,193,600,961.35 × 215,826,677,855.18 - Step 4: Simplify right side
378,398,800,742.28x = 112,703,310,092,721,683,693,568 - Step 5: Solve for x
x = 112,703,310,092,721,683,693,568/378,398,800,742.28 - Step 6: Final answer
x = 297,842,672,523.38
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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.