Finding the Fourth Proportional to 486,711.95, 729,049.57 and 391,427.08
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Solution
The fourth proportional to 486,711.95, 729,049.57 and 391,427.08 is: 586,321.63
Step by Step Solution
- Step 1: Write the proportion equation
486,711.95 : 729,049.57 = 391,427.08 : x - Step 2: Convert to fraction form
486,711.95/729,049.57 = 391,427.08/x - Step 3: Cross multiply
486,711.95x = 729,049.57 × 391,427.08 - Step 4: Simplify right side
486,711.95x = 285,369,741,559.16 - Step 5: Solve for x
x = 285,369,741,559.16/486,711.95 - Step 6: Final answer
x = 586,321.63
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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.