Finding the Fourth Proportional to 812,356.24, 1,121,086.64 and 449,780.09
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Solution
The fourth proportional to 812,356.24, 1,121,086.64 and 449,780.09 is: 620,715.92
Step by Step Solution
- Step 1: Write the proportion equation
812,356.24 : 1,121,086.64 = 449,780.09 : x - Step 2: Convert to fraction form
812,356.24/1,121,086.64 = 449,780.09/x - Step 3: Cross multiply
812,356.24x = 1,121,086.64 × 449,780.09 - Step 4: Simplify right side
812,356.24x = 504,242,449,837.00 - Step 5: Solve for x
x = 504,242,449,837.00/812,356.24 - Step 6: Final answer
x = 620,715.92
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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.