Finding the Fourth Proportional to 718,988.28, 992,201.04 and 396,718.44
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Solution
The fourth proportional to 718,988.28, 992,201.04 and 396,718.44 is: 547,469.91
Step by Step Solution
- Step 1: Write the proportion equation
718,988.28 : 992,201.04 = 396,718.44 : x - Step 2: Convert to fraction form
718,988.28/992,201.04 = 396,718.44/x - Step 3: Cross multiply
718,988.28x = 992,201.04 × 396,718.44 - Step 4: Simplify right side
718,988.28x = 393,624,448,755.18 - Step 5: Solve for x
x = 393,624,448,755.18/718,988.28 - Step 6: Final answer
x = 547,469.91
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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.