Finding the Fourth Proportional to 18,664,458.40, 27,996,687.60 and 5,201,286.40
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Solution
The fourth proportional to 18,664,458.40, 27,996,687.60 and 5,201,286.40 is: 7,801,929.60
Step by Step Solution
- Step 1: Write the proportion equation
18,664,458.40 : 27,996,687.60 = 5,201,286.40 : x - Step 2: Convert to fraction form
18,664,458.40/27,996,687.60 = 5,201,286.40/x - Step 3: Cross multiply
18,664,458.40x = 27,996,687.60 × 5,201,286.40 - Step 4: Simplify right side
18,664,458.40x = 145,618,790,458,928.66 - Step 5: Solve for x
x = 145,618,790,458,928.66/18,664,458.40 - Step 6: Final answer
x = 7,801,929.60
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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.