Finding the Fourth Proportional to 745,414.20, 1,118,121.30 and 664,543.80
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Solution
The fourth proportional to 745,414.20, 1,118,121.30 and 664,543.80 is: 996,815.70
Step by Step Solution
- Step 1: Write the proportion equation
745,414.20 : 1,118,121.30 = 664,543.80 : x - Step 2: Convert to fraction form
745,414.20/1,118,121.30 = 664,543.80/x - Step 3: Cross multiply
745,414.20x = 1,118,121.30 × 664,543.80 - Step 4: Simplify right side
745,414.20x = 743,040,577,562.94 - Step 5: Solve for x
x = 743,040,577,562.94/745,414.20 - Step 6: Final answer
x = 996,815.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.