Finding the Fourth Proportional to 638,213.64, 880,884.91 and 396,678.63
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Solution
The fourth proportional to 638,213.64, 880,884.91 and 396,678.63 is: 547,509.80
Step by Step Solution
- Step 1: Write the proportion equation
638,213.64 : 880,884.91 = 396,678.63 : x - Step 2: Convert to fraction form
638,213.64/880,884.91 = 396,678.63/x - Step 3: Cross multiply
638,213.64x = 880,884.91 × 396,678.63 - Step 4: Simplify right side
638,213.64x = 349,428,219,286.47 - Step 5: Solve for x
x = 349,428,219,286.47/638,213.64 - Step 6: Final answer
x = 547,509.80
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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.