Finding the Fourth Proportional to 812,446.07, 1,121,161.88 and 449,862.12
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Solution
The fourth proportional to 812,446.07, 1,121,161.88 and 449,862.12 is: 620,802.15
Step by Step Solution
- Step 1: Write the proportion equation
812,446.07 : 1,121,161.88 = 449,862.12 : x - Step 2: Convert to fraction form
812,446.07/1,121,161.88 = 449,862.12/x - Step 3: Cross multiply
812,446.07x = 1,121,161.88 × 449,862.12 - Step 4: Simplify right side
812,446.07x = 504,368,261,324.64 - Step 5: Solve for x
x = 504,368,261,324.64/812,446.07 - Step 6: Final answer
x = 620,802.15
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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.