Finding the Fourth Proportional to 814,043.09, 1,219,716.79 and 281,268.02
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Solution
The fourth proportional to 814,043.09, 1,219,716.79 and 281,268.02 is: 421,436.32
Step by Step Solution
- Step 1: Write the proportion equation
814,043.09 : 1,219,716.79 = 281,268.02 : x - Step 2: Convert to fraction form
814,043.09/1,219,716.79 = 281,268.02/x - Step 3: Cross multiply
814,043.09x = 1,219,716.79 × 281,268.02 - Step 4: Simplify right side
814,043.09x = 343,067,326,484.06 - Step 5: Solve for x
x = 343,067,326,484.06/814,043.09 - Step 6: Final answer
x = 421,436.32
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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.