Finding the Fourth Proportional to 638,609.20, 881,286.84 and 352,139.44
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Solution
The fourth proportional to 638,609.20, 881,286.84 and 352,139.44 is: 485,955.82
Step by Step Solution
- Step 1: Write the proportion equation
638,609.20 : 881,286.84 = 352,139.44 : x - Step 2: Convert to fraction form
638,609.20/881,286.84 = 352,139.44/x - Step 3: Cross multiply
638,609.20x = 881,286.84 × 352,139.44 - Step 4: Simplify right side
638,609.20x = 310,335,854,316.97 - Step 5: Solve for x
x = 310,335,854,316.97/638,609.20 - Step 6: Final answer
x = 485,955.82
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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.