Finding the Fourth Proportional to 858,751.20, 1,288,126.80 and 297,785.70
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Solution
The fourth proportional to 858,751.20, 1,288,126.80 and 297,785.70 is: 446,678.55
Step by Step Solution
- Step 1: Write the proportion equation
858,751.20 : 1,288,126.80 = 297,785.70 : x - Step 2: Convert to fraction form
858,751.20/1,288,126.80 = 297,785.70/x - Step 3: Cross multiply
858,751.20x = 1,288,126.80 × 297,785.70 - Step 4: Simplify right side
858,751.20x = 383,585,740,826.76 - Step 5: Solve for x
x = 383,585,740,826.76/858,751.20 - Step 6: Final answer
x = 446,678.55
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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.