Finding the Fourth Proportional to 720,879.22, 994,773.18 and 398,569.96
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Solution
The fourth proportional to 720,879.22, 994,773.18 and 398,569.96 is: 550,004.35
Step by Step Solution
- Step 1: Write the proportion equation
720,879.22 : 994,773.18 = 398,569.96 : x - Step 2: Convert to fraction form
720,879.22/994,773.18 = 398,569.96/x - Step 3: Cross multiply
720,879.22x = 994,773.18 × 398,569.96 - Step 4: Simplify right side
720,879.22x = 396,486,706,561.67 - Step 5: Solve for x
x = 396,486,706,561.67/720,879.22 - Step 6: Final answer
x = 550,004.35
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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.