Finding the Fourth Proportional to 7,241,007.21, 9,992,596.49 and 3,978,033.31
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Solution
The fourth proportional to 7,241,007.21, 9,992,596.49 and 3,978,033.31 is: 5,489,689.56
Step by Step Solution
- Step 1: Write the proportion equation
7,241,007.21 : 9,992,596.49 = 3,978,033.31 : x - Step 2: Convert to fraction form
7,241,007.21/9,992,596.49 = 3,978,033.31/x - Step 3: Cross multiply
7,241,007.21x = 9,992,596.49 × 3,978,033.31 - Step 4: Simplify right side
7,241,007.21x = 39,750,881,690,609.09 - Step 5: Solve for x
x = 39,750,881,690,609.09/7,241,007.21 - Step 6: Final answer
x = 5,489,689.56
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1.5x scale
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.