Finding the Fourth Proportional to 2,989,198.68, 4,125,656.70 and 1,872,105.09
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Solution
The fourth proportional to 2,989,198.68, 4,125,656.70 and 1,872,105.09 is: 2,583,857.33
Step by Step Solution
- Step 1: Write the proportion equation
2,989,198.68 : 4,125,656.70 = 1,872,105.09 : x - Step 2: Convert to fraction form
2,989,198.68/4,125,656.70 = 1,872,105.09/x - Step 3: Cross multiply
2,989,198.68x = 4,125,656.70 × 1,872,105.09 - Step 4: Simplify right side
2,989,198.68x = 7,723,662,907,662.60 - Step 5: Solve for x
x = 7,723,662,907,662.60/2,989,198.68 - Step 6: Final answer
x = 2,583,857.33
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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.