Finding the Fourth Proportional to 720,761.58, 994,645.44 and 398,485.26
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Solution
The fourth proportional to 720,761.58, 994,645.44 and 398,485.26 is: 549,906.60
Step by Step Solution
- Step 1: Write the proportion equation
720,761.58 : 994,645.44 = 398,485.26 : x - Step 2: Convert to fraction form
720,761.58/994,645.44 = 398,485.26/x - Step 3: Cross multiply
720,761.58x = 994,645.44 × 398,485.26 - Step 4: Simplify right side
720,761.58x = 396,351,546,766.21 - Step 5: Solve for x
x = 396,351,546,766.21/720,761.58 - Step 6: Final answer
x = 549,906.60
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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.