Finding the Fourth Proportional to 669,372.24, 923,640.76 and 393,742.60
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Solution
The fourth proportional to 669,372.24, 923,640.76 and 393,742.60 is: 543,310.12
Step by Step Solution
- Step 1: Write the proportion equation
669,372.24 : 923,640.76 = 393,742.60 : x - Step 2: Convert to fraction form
669,372.24/923,640.76 = 393,742.60/x - Step 3: Cross multiply
669,372.24x = 923,640.76 × 393,742.60 - Step 4: Simplify right side
669,372.24x = 363,676,714,308.38 - Step 5: Solve for x
x = 363,676,714,308.38/669,372.24 - Step 6: Final answer
x = 543,310.12
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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.