Finding the Fourth Proportional to 790,942.68, 1,091,495.42 and 428,358.28
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Solution
The fourth proportional to 790,942.68, 1,091,495.42 and 428,358.28 is: 591,131.46
Step by Step Solution
- Step 1: Write the proportion equation
790,942.68 : 1,091,495.42 = 428,358.28 : x - Step 2: Convert to fraction form
790,942.68/1,091,495.42 = 428,358.28/x - Step 3: Cross multiply
790,942.68x = 1,091,495.42 × 428,358.28 - Step 4: Simplify right side
790,942.68x = 467,551,100,739.08 - Step 5: Solve for x
x = 467,551,100,739.08/790,942.68 - Step 6: Final answer
x = 591,131.46
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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.