Finding the Fourth Proportional to 515,163.87, 710,932.01 and 285,725.70
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Solution
The fourth proportional to 515,163.87, 710,932.01 and 285,725.70 is: 394,304.72
Step by Step Solution
- Step 1: Write the proportion equation
515,163.87 : 710,932.01 = 285,725.70 : x - Step 2: Convert to fraction form
515,163.87/710,932.01 = 285,725.70/x - Step 3: Cross multiply
515,163.87x = 710,932.01 × 285,725.70 - Step 4: Simplify right side
515,163.87x = 203,131,544,781.03 - Step 5: Solve for x
x = 203,131,544,781.03/515,163.87 - Step 6: Final answer
x = 394,304.72
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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.