Finding the Fourth Proportional to 642,310.48, 886,394.64 and 355,836.64
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Solution
The fourth proportional to 642,310.48, 886,394.64 and 355,836.64 is: 491,057.99
Step by Step Solution
- Step 1: Write the proportion equation
642,310.48 : 886,394.64 = 355,836.64 : x - Step 2: Convert to fraction form
642,310.48/886,394.64 = 355,836.64/x - Step 3: Cross multiply
642,310.48x = 886,394.64 × 355,836.64 - Step 4: Simplify right side
642,310.48x = 315,411,690,411.61 - Step 5: Solve for x
x = 315,411,690,411.61/642,310.48 - Step 6: Final answer
x = 491,057.99
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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.