Finding the Fourth Proportional to 858,872.14, 1,287,908.40 and 318,752.12
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Solution
The fourth proportional to 858,872.14, 1,287,908.40 and 318,752.12 is: 477,979.80
Step by Step Solution
- Step 1: Write the proportion equation
858,872.14 : 1,287,908.40 = 318,752.12 : x - Step 2: Convert to fraction form
858,872.14/1,287,908.40 = 318,752.12/x - Step 3: Cross multiply
858,872.14x = 1,287,908.40 × 318,752.12 - Step 4: Simplify right side
858,872.14x = 410,523,532,865.81 - Step 5: Solve for x
x = 410,523,532,865.81/858,872.14 - Step 6: Final answer
x = 477,979.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.