Finding the Fourth Proportional to 872,439.12, 1,203,474.24 and 509,785.92
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Solution
The fourth proportional to 872,439.12, 1,203,474.24 and 509,785.92 is: 703,217.23
Step by Step Solution
- Step 1: Write the proportion equation
872,439.12 : 1,203,474.24 = 509,785.92 : x - Step 2: Convert to fraction form
872,439.12/1,203,474.24 = 509,785.92/x - Step 3: Cross multiply
872,439.12x = 1,203,474.24 × 509,785.92 - Step 4: Simplify right side
872,439.12x = 613,514,222,634.70 - Step 5: Solve for x
x = 613,514,222,634.70/872,439.12 - Step 6: Final answer
x = 703,217.23
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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.