Finding the Fourth Proportional to 812,464.11, 1,121,186.73 and 449,880.18
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Solution
The fourth proportional to 812,464.11, 1,121,186.73 and 449,880.18 is: 620,827.04
Step by Step Solution
- Step 1: Write the proportion equation
812,464.11 : 1,121,186.73 = 449,880.18 : x - Step 2: Convert to fraction form
812,464.11/1,121,186.73 = 449,880.18/x - Step 3: Cross multiply
812,464.11x = 1,121,186.73 × 449,880.18 - Step 4: Simplify right side
812,464.11x = 504,399,685,656.61 - Step 5: Solve for x
x = 504,399,685,656.61/812,464.11 - Step 6: Final answer
x = 620,827.04
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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.