Finding the Fourth Proportional to 515,906.99, 711,951.63 and 289,552.49
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Solution
The fourth proportional to 515,906.99, 711,951.63 and 289,552.49 is: 399,582.43
Step by Step Solution
- Step 1: Write the proportion equation
515,906.99 : 711,951.63 = 289,552.49 : x - Step 2: Convert to fraction form
515,906.99/711,951.63 = 289,552.49/x - Step 3: Cross multiply
515,906.99x = 711,951.63 × 289,552.49 - Step 4: Simplify right side
515,906.99x = 206,147,367,226.06 - Step 5: Solve for x
x = 206,147,367,226.06/515,906.99 - Step 6: Final answer
x = 399,582.43
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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.