Finding the Fourth Proportional to 825,716.79, 1,238,277.99 and 285,826.38
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Solution
The fourth proportional to 825,716.79, 1,238,277.99 and 285,826.38 is: 428,636.69
Step by Step Solution
- Step 1: Write the proportion equation
825,716.79 : 1,238,277.99 = 285,826.38 : x - Step 2: Convert to fraction form
825,716.79/1,238,277.99 = 285,826.38/x - Step 3: Cross multiply
825,716.79x = 1,238,277.99 × 285,826.38 - Step 4: Simplify right side
825,716.79x = 353,932,515,315.38 - Step 5: Solve for x
x = 353,932,515,315.38/825,716.79 - Step 6: Final answer
x = 428,636.69
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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.