Finding the Fourth Proportional to 4,722,629.76, 7,081,615.49 and 1,989,678.15
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Solution
The fourth proportional to 4,722,629.76, 7,081,615.49 and 1,989,678.15 is: 2,983,535.94
Step by Step Solution
- Step 1: Write the proportion equation
4,722,629.76 : 7,081,615.49 = 1,989,678.15 : x - Step 2: Convert to fraction form
4,722,629.76/7,081,615.49 = 1,989,678.15/x - Step 3: Cross multiply
4,722,629.76x = 7,081,615.49 × 1,989,678.15 - Step 4: Simplify right side
4,722,629.76x = 14,090,135,597,206.15 - Step 5: Solve for x
x = 14,090,135,597,206.15/4,722,629.76 - Step 6: Final answer
x = 2,983,535.94
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.