Finding the Fourth Proportional to 324,873.20, 486,661.80 and 285,906.80
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Solution
The fourth proportional to 324,873.20, 486,661.80 and 285,906.80 is: 428,289.92
Step by Step Solution
- Step 1: Write the proportion equation
324,873.20 : 486,661.80 = 285,906.80 : x - Step 2: Convert to fraction form
324,873.20/486,661.80 = 285,906.80/x - Step 3: Cross multiply
324,873.20x = 486,661.80 × 285,906.80 - Step 4: Simplify right side
324,873.20x = 139,139,917,920.24 - Step 5: Solve for x
x = 139,139,917,920.24/324,873.20 - Step 6: Final answer
x = 428,289.92
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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.