Finding the Fourth Proportional to 720,531.18, 994,336.20 and 393,850.86
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Solution
The fourth proportional to 720,531.18, 994,336.20 and 393,850.86 is: 543,515.92
Step by Step Solution
- Step 1: Write the proportion equation
720,531.18 : 994,336.20 = 393,850.86 : x - Step 2: Convert to fraction form
720,531.18/994,336.20 = 393,850.86/x - Step 3: Cross multiply
720,531.18x = 994,336.20 × 393,850.86 - Step 4: Simplify right side
720,531.18x = 391,620,167,499.13 - Step 5: Solve for x
x = 391,620,167,499.13/720,531.18 - Step 6: Final answer
x = 543,515.92
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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.