Finding the Fourth Proportional to 7,900,352.82, 10,898,121.67 and 6,431,841.09
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Solution
The fourth proportional to 7,900,352.82, 10,898,121.67 and 6,431,841.09 is: 8,872,386.88
Step by Step Solution
- Step 1: Write the proportion equation
7,900,352.82 : 10,898,121.67 = 6,431,841.09 : x - Step 2: Convert to fraction form
7,900,352.82/10,898,121.67 = 6,431,841.09/x - Step 3: Cross multiply
7,900,352.82x = 10,898,121.67 × 6,431,841.09 - Step 4: Simplify right side
7,900,352.82x = 70,094,986,744,845.82 - Step 5: Solve for x
x = 70,094,986,744,845.82/7,900,352.82 - Step 6: Final answer
x = 8,872,386.88
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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.