Finding the Fourth Proportional to 5,064,678.38, 6,988,605.18 and 2,889,091.68
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Solution
The fourth proportional to 5,064,678.38, 6,988,605.18 and 2,889,091.68 is: 3,986,575.18
Step by Step Solution
- Step 1: Write the proportion equation
5,064,678.38 : 6,988,605.18 = 2,889,091.68 : x - Step 2: Convert to fraction form
5,064,678.38/6,988,605.18 = 2,889,091.68/x - Step 3: Cross multiply
5,064,678.38x = 6,988,605.18 × 2,889,091.68 - Step 4: Simplify right side
5,064,678.38x = 20,190,721,080,342.90 - Step 5: Solve for x
x = 20,190,721,080,342.90/5,064,678.38 - Step 6: Final answer
x = 3,986,575.18
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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.