Finding the Fourth Proportional to 726,217.09, 1,002,159.47 and 395,062.05
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Solution
The fourth proportional to 726,217.09, 1,002,159.47 and 395,062.05 is: 545,174.68
Step by Step Solution
- Step 1: Write the proportion equation
726,217.09 : 1,002,159.47 = 395,062.05 : x - Step 2: Convert to fraction form
726,217.09/1,002,159.47 = 395,062.05/x - Step 3: Cross multiply
726,217.09x = 1,002,159.47 × 395,062.05 - Step 4: Simplify right side
726,217.09x = 395,915,170,278.80 - Step 5: Solve for x
x = 395,915,170,278.80/726,217.09 - Step 6: Final answer
x = 545,174.68
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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.