Finding the Fourth Proportional to 755,330.72, 1,042,121.60 and 428,589.68
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Solution
The fourth proportional to 755,330.72, 1,042,121.60 and 428,589.68 is: 591,320.53
Step by Step Solution
- Step 1: Write the proportion equation
755,330.72 : 1,042,121.60 = 428,589.68 : x - Step 2: Convert to fraction form
755,330.72/1,042,121.60 = 428,589.68/x - Step 3: Cross multiply
755,330.72x = 1,042,121.60 × 428,589.68 - Step 4: Simplify right side
755,330.72x = 446,642,563,065.09 - Step 5: Solve for x
x = 446,642,563,065.09/755,330.72 - Step 6: Final answer
x = 591,320.53
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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.