Finding the Fourth Proportional to 5,419,723.14, 7,478,678.94 and 3,128,621.94
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Solution
The fourth proportional to 5,419,723.14, 7,478,678.94 and 3,128,621.94 is: 4,317,187.13
Step by Step Solution
- Step 1: Write the proportion equation
5,419,723.14 : 7,478,678.94 = 3,128,621.94 : x - Step 2: Convert to fraction form
5,419,723.14/7,478,678.94 = 3,128,621.94/x - Step 3: Cross multiply
5,419,723.14x = 7,478,678.94 × 3,128,621.94 - Step 4: Simplify right side
5,419,723.14x = 23,397,959,013,899.95 - Step 5: Solve for x
x = 23,397,959,013,899.95/5,419,723.14 - Step 6: Final answer
x = 4,317,187.13
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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.