Finding the Fourth Proportional to 690,711.21, 1,036,232.70 and 264,240.05
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Solution
The fourth proportional to 690,711.21, 1,036,232.70 and 264,240.05 is: 396,423.53
Step by Step Solution
- Step 1: Write the proportion equation
690,711.21 : 1,036,232.70 = 264,240.05 : x - Step 2: Convert to fraction form
690,711.21/1,036,232.70 = 264,240.05/x - Step 3: Cross multiply
690,711.21x = 1,036,232.70 × 264,240.05 - Step 4: Simplify right side
690,711.21x = 273,814,179,138.44 - Step 5: Solve for x
x = 273,814,179,138.44/690,711.21 - Step 6: Final answer
x = 396,423.53
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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.