Finding the Fourth Proportional to 491,896.74, 678,818.84 and 285,205.26
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Solution
The fourth proportional to 491,896.74, 678,818.84 and 285,205.26 is: 393,584.03
Step by Step Solution
- Step 1: Write the proportion equation
491,896.74 : 678,818.84 = 285,205.26 : x - Step 2: Convert to fraction form
491,896.74/678,818.84 = 285,205.26/x - Step 3: Cross multiply
491,896.74x = 678,818.84 × 285,205.26 - Step 4: Simplify right side
491,896.74x = 193,602,702,329.07 - Step 5: Solve for x
x = 193,602,702,329.07/491,896.74 - Step 6: Final answer
x = 393,584.03
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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.