Finding the Fourth Proportional to 681,478.38, 1,022,221.35 and 281,902.68
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Solution
The fourth proportional to 681,478.38, 1,022,221.35 and 281,902.68 is: 422,855.58
Step by Step Solution
- Step 1: Write the proportion equation
681,478.38 : 1,022,221.35 = 281,902.68 : x - Step 2: Convert to fraction form
681,478.38/1,022,221.35 = 281,902.68/x - Step 3: Cross multiply
681,478.38x = 1,022,221.35 × 281,902.68 - Step 4: Simplify right side
681,478.38x = 288,166,938,118.22 - Step 5: Solve for x
x = 288,166,938,118.22/681,478.38 - Step 6: Final answer
x = 422,855.58
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.