Finding the Fourth Proportional to 812,389.94, 1,121,161.22 and 449,847.53
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Solution
The fourth proportional to 812,389.94, 1,121,161.22 and 449,847.53 is: 620,824.53
Step by Step Solution
- Step 1: Write the proportion equation
812,389.94 : 1,121,161.22 = 449,847.53 : x - Step 2: Convert to fraction form
812,389.94/1,121,161.22 = 449,847.53/x - Step 3: Cross multiply
812,389.94x = 1,121,161.22 × 449,847.53 - Step 4: Simplify right side
812,389.94x = 504,351,597,693.74 - Step 5: Solve for x
x = 504,351,597,693.74/812,389.94 - Step 6: Final answer
x = 620,824.53
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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.