Finding the Fourth Proportional to 418,879.20, 628,318.80 and 324,400.80
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Solution
The fourth proportional to 418,879.20, 628,318.80 and 324,400.80 is: 486,601.20
Step by Step Solution
- Step 1: Write the proportion equation
418,879.20 : 628,318.80 = 324,400.80 : x - Step 2: Convert to fraction form
418,879.20/628,318.80 = 324,400.80/x - Step 3: Cross multiply
418,879.20x = 628,318.80 × 324,400.80 - Step 4: Simplify right side
418,879.20x = 203,827,121,375.04 - Step 5: Solve for x
x = 203,827,121,375.04/418,879.20 - Step 6: Final answer
x = 486,601.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.