Finding the Fourth Proportional to 642,362.91, 886,489.86 and 355,882.99
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Solution
The fourth proportional to 642,362.91, 886,489.86 and 355,882.99 is: 491,134.62
Step by Step Solution
- Step 1: Write the proportion equation
642,362.91 : 886,489.86 = 355,882.99 : x - Step 2: Convert to fraction form
642,362.91/886,489.86 = 355,882.99/x - Step 3: Cross multiply
642,362.91x = 886,489.86 × 355,882.99 - Step 4: Simplify right side
642,362.91x = 315,486,662,752.94 - Step 5: Solve for x
x = 315,486,662,752.94/642,362.91 - Step 6: Final answer
x = 491,134.62
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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.