Finding the Fourth Proportional to 486,107.40, 729,161.10 and 318,145.80
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Solution
The fourth proportional to 486,107.40, 729,161.10 and 318,145.80 is: 477,218.70
Step by Step Solution
- Step 1: Write the proportion equation
486,107.40 : 729,161.10 = 318,145.80 : x - Step 2: Convert to fraction form
486,107.40/729,161.10 = 318,145.80/x - Step 3: Cross multiply
486,107.40x = 729,161.10 × 318,145.80 - Step 4: Simplify right side
486,107.40x = 231,979,541,488.38 - Step 5: Solve for x
x = 231,979,541,488.38/486,107.40 - Step 6: Final answer
x = 477,218.70
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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.