Finding the Fourth Proportional to 6,912,287.80, 10,368,431.70 and 2,120,716.60
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Solution
The fourth proportional to 6,912,287.80, 10,368,431.70 and 2,120,716.60 is: 3,181,074.90
Step by Step Solution
- Step 1: Write the proportion equation
6,912,287.80 : 10,368,431.70 = 2,120,716.60 : x - Step 2: Convert to fraction form
6,912,287.80/10,368,431.70 = 2,120,716.60/x - Step 3: Cross multiply
6,912,287.80x = 10,368,431.70 × 2,120,716.60 - Step 4: Simplify right side
6,912,287.80x = 21,988,505,222,156.22 - Step 5: Solve for x
x = 21,988,505,222,156.22/6,912,287.80 - Step 6: Final answer
x = 3,181,074.90
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1.5x scale
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.