Finding the Fourth Proportional to 720,174.21, 993,850.84 and 397,891.72
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Solution
The fourth proportional to 720,174.21, 993,850.84 and 397,891.72 is: 549,096.34
Step by Step Solution
- Step 1: Write the proportion equation
720,174.21 : 993,850.84 = 397,891.72 : x - Step 2: Convert to fraction form
720,174.21/993,850.84 = 397,891.72/x - Step 3: Cross multiply
720,174.21x = 993,850.84 × 397,891.72 - Step 4: Simplify right side
720,174.21x = 395,445,020,151.05 - Step 5: Solve for x
x = 395,445,020,151.05/720,174.21 - Step 6: Final answer
x = 549,096.34
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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.