Finding the Fourth Proportional to 499,912.22, 689,861.71 and 285,121.49
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Solution
The fourth proportional to 499,912.22, 689,861.71 and 285,121.49 is: 393,457.86
Step by Step Solution
- Step 1: Write the proportion equation
499,912.22 : 689,861.71 = 285,121.49 : x - Step 2: Convert to fraction form
499,912.22/689,861.71 = 285,121.49/x - Step 3: Cross multiply
499,912.22x = 689,861.71 × 285,121.49 - Step 4: Simplify right side
499,912.22x = 196,694,395,556.24 - Step 5: Solve for x
x = 196,694,395,556.24/499,912.22 - Step 6: Final answer
x = 393,457.86
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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.