Finding the Fourth Proportional to 858,138.10, 1,287,207.15 and 659,461.30
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Solution
The fourth proportional to 858,138.10, 1,287,207.15 and 659,461.30 is: 989,191.95
Step by Step Solution
- Step 1: Write the proportion equation
858,138.10 : 1,287,207.15 = 659,461.30 : x - Step 2: Convert to fraction form
858,138.10/1,287,207.15 = 659,461.30/x - Step 3: Cross multiply
858,138.10x = 1,287,207.15 × 659,461.30 - Step 4: Simplify right side
858,138.10x = 848,863,300,508.30 - Step 5: Solve for x
x = 848,863,300,508.30/858,138.10 - Step 6: Final answer
x = 989,191.95
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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.