Finding the Fourth Proportional to 890,715.40, 1,336,202.70 and 291,531.40
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Solution
The fourth proportional to 890,715.40, 1,336,202.70 and 291,531.40 is: 437,339.52
Step by Step Solution
- Step 1: Write the proportion equation
890,715.40 : 1,336,202.70 = 291,531.40 : x - Step 2: Convert to fraction form
890,715.40/1,336,202.70 = 291,531.40/x - Step 3: Cross multiply
890,715.40x = 1,336,202.70 × 291,531.40 - Step 4: Simplify right side
890,715.40x = 389,545,043,814.78 - Step 5: Solve for x
x = 389,545,043,814.78/890,715.40 - Step 6: Final answer
x = 437,339.52
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1.5x scale
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.