Finding the Fourth Proportional to 9,212,919.75, 12,713,829.26 and 5,138,538.75
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Solution
The fourth proportional to 9,212,919.75, 12,713,829.26 and 5,138,538.75 is: 7,091,183.48
Step by Step Solution
- Step 1: Write the proportion equation
9,212,919.75 : 12,713,829.26 = 5,138,538.75 : x - Step 2: Convert to fraction form
9,212,919.75/12,713,829.26 = 5,138,538.75/x - Step 3: Cross multiply
9,212,919.75x = 12,713,829.26 × 5,138,538.75 - Step 4: Simplify right side
9,212,919.75x = 65,330,504,287,701.13 - Step 5: Solve for x
x = 65,330,504,287,701.13/9,212,919.75 - Step 6: Final answer
x = 7,091,183.48
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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.