Finding the Fourth Proportional to 667,128.38, 920,626.08 and 361,202.31
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Solution
The fourth proportional to 667,128.38, 920,626.08 and 361,202.31 is: 498,453.19
Step by Step Solution
- Step 1: Write the proportion equation
667,128.38 : 920,626.08 = 361,202.31 : x - Step 2: Convert to fraction form
667,128.38/920,626.08 = 361,202.31/x - Step 3: Cross multiply
667,128.38x = 920,626.08 × 361,202.31 - Step 4: Simplify right side
667,128.38x = 332,532,266,742.25 - Step 5: Solve for x
x = 332,532,266,742.25/667,128.38 - Step 6: Final answer
x = 498,453.19
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.