Finding the Fourth Proportional to 812,486.92, 1,121,218.15 and 449,902.99
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Solution
The fourth proportional to 812,486.92, 1,121,218.15 and 449,902.99 is: 620,858.48
Step by Step Solution
- Step 1: Write the proportion equation
812,486.92 : 1,121,218.15 = 449,902.99 : x - Step 2: Convert to fraction form
812,486.92/1,121,218.15 = 449,902.99/x - Step 3: Cross multiply
812,486.92x = 1,121,218.15 × 449,902.99 - Step 4: Simplify right side
812,486.92x = 504,439,398,127.27 - Step 5: Solve for x
x = 504,439,398,127.27/812,486.92 - Step 6: Final answer
x = 620,858.48
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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.