Finding the Fourth Proportional to 812,464.63, 1,121,187.49 and 449,880.70
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Solution
The fourth proportional to 812,464.63, 1,121,187.49 and 449,880.70 is: 620,827.78
Step by Step Solution
- Step 1: Write the proportion equation
812,464.63 : 1,121,187.49 = 449,880.70 : x - Step 2: Convert to fraction form
812,464.63/1,121,187.49 = 449,880.70/x - Step 3: Cross multiply
812,464.63x = 1,121,187.49 × 449,880.70 - Step 4: Simplify right side
812,464.63x = 504,400,612,832.44 - Step 5: Solve for x
x = 504,400,612,832.44/812,464.63 - Step 6: Final answer
x = 620,827.78
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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.