Finding the Fourth Proportional to 511,012.68, 705,489.80 and 339,163.70
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Solution
The fourth proportional to 511,012.68, 705,489.80 and 339,163.70 is: 468,239.91
Step by Step Solution
- Step 1: Write the proportion equation
511,012.68 : 705,489.80 = 339,163.70 : x - Step 2: Convert to fraction form
511,012.68/705,489.80 = 339,163.70/x - Step 3: Cross multiply
511,012.68x = 705,489.80 × 339,163.70 - Step 4: Simplify right side
511,012.68x = 239,276,530,880.26 - Step 5: Solve for x
x = 239,276,530,880.26/511,012.68 - Step 6: Final answer
x = 468,239.91
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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.