Finding the Fourth Proportional to 720,236.02, 993,899.01 and 397,939.18
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Solution
The fourth proportional to 720,236.02, 993,899.01 and 397,939.18 is: 549,141.32
Step by Step Solution
- Step 1: Write the proportion equation
720,236.02 : 993,899.01 = 397,939.18 : x - Step 2: Convert to fraction form
720,236.02/993,899.01 = 397,939.18/x - Step 3: Cross multiply
720,236.02x = 993,899.01 × 397,939.18 - Step 4: Simplify right side
720,236.02x = 395,511,357,042.21 - Step 5: Solve for x
x = 395,511,357,042.21/720,236.02 - Step 6: Final answer
x = 549,141.32
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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.