Finding the Fourth Proportional to 638,569.66, 881,163.84 and 393,516.31
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Solution
The fourth proportional to 638,569.66, 881,163.84 and 393,516.31 is: 543,014.12
Step by Step Solution
- Step 1: Write the proportion equation
638,569.66 : 881,163.84 = 393,516.31 : x - Step 2: Convert to fraction form
638,569.66/881,163.84 = 393,516.31/x - Step 3: Cross multiply
638,569.66x = 881,163.84 × 393,516.31 - Step 4: Simplify right side
638,569.66x = 346,752,342,822.23 - Step 5: Solve for x
x = 346,752,342,822.23/638,569.66 - Step 6: Final answer
x = 543,014.12
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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.