Finding the Fourth Proportional to 4,839,829.20, 7,259,944.12 and 1,428,115.79
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Solution
The fourth proportional to 4,839,829.20, 7,259,944.12 and 1,428,115.79 is: 2,142,232.80
Step by Step Solution
- Step 1: Write the proportion equation
4,839,829.20 : 7,259,944.12 = 1,428,115.79 : x - Step 2: Convert to fraction form
4,839,829.20/7,259,944.12 = 1,428,115.79/x - Step 3: Cross multiply
4,839,829.20x = 7,259,944.12 × 1,428,115.79 - Step 4: Simplify right side
4,839,829.20x = 10,368,040,846,869.22 - Step 5: Solve for x
x = 10,368,040,846,869.22/4,839,829.20 - Step 6: Final answer
x = 2,142,232.80
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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.