Finding the Fourth Proportional to 720,788.04, 994,689.29 and 394,122.23
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Solution
The fourth proportional to 720,788.04, 994,689.29 and 394,122.23 is: 543,889.66
Step by Step Solution
- Step 1: Write the proportion equation
720,788.04 : 994,689.29 = 394,122.23 : x - Step 2: Convert to fraction form
720,788.04/994,689.29 = 394,122.23/x - Step 3: Cross multiply
720,788.04x = 994,689.29 × 394,122.23 - Step 4: Simplify right side
720,788.04x = 392,029,162,562.96 - Step 5: Solve for x
x = 392,029,162,562.96/720,788.04 - Step 6: Final answer
x = 543,889.66
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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.