Finding the Fourth Proportional to 389,396.61, 537,610.56 and 298,578.09
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Solution
The fourth proportional to 389,396.61, 537,610.56 and 298,578.09 is: 412,224.27
Step by Step Solution
- Step 1: Write the proportion equation
389,396.61 : 537,610.56 = 298,578.09 : x - Step 2: Convert to fraction form
389,396.61/537,610.56 = 298,578.09/x - Step 3: Cross multiply
389,396.61x = 537,610.56 × 298,578.09 - Step 4: Simplify right side
389,396.61x = 160,518,734,168.63 - Step 5: Solve for x
x = 160,518,734,168.63/389,396.61 - Step 6: Final answer
x = 412,224.27
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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.