Finding the Fourth Proportional to 691,121.76, 953,757.57 and 385,189.62
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Solution
The fourth proportional to 691,121.76, 953,757.57 and 385,189.62 is: 531,566.99
Step by Step Solution
- Step 1: Write the proportion equation
691,121.76 : 953,757.57 = 385,189.62 : x - Step 2: Convert to fraction form
691,121.76/953,757.57 = 385,189.62/x - Step 3: Cross multiply
691,121.76x = 953,757.57 × 385,189.62 - Step 4: Simplify right side
691,121.76x = 367,377,515,960.42 - Step 5: Solve for x
x = 367,377,515,960.42/691,121.76 - Step 6: Final answer
x = 531,566.99
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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.