Finding the Fourth Proportional to 857,944.20, 1,287,139.86 and 325,476.12
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Solution
The fourth proportional to 857,944.20, 1,287,139.86 and 325,476.12 is: 488,298.99
Step by Step Solution
- Step 1: Write the proportion equation
857,944.20 : 1,287,139.86 = 325,476.12 : x - Step 2: Convert to fraction form
857,944.20/1,287,139.86 = 325,476.12/x - Step 3: Cross multiply
857,944.20x = 1,287,139.86 × 325,476.12 - Step 4: Simplify right side
857,944.20x = 418,933,287,530.14 - Step 5: Solve for x
x = 418,933,287,530.14/857,944.20 - Step 6: Final answer
x = 488,298.99
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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.