Finding the Fourth Proportional to 5,129,309.36, 7,078,614.69 and 2,806,147.95
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Solution
The fourth proportional to 5,129,309.36, 7,078,614.69 and 2,806,147.95 is: 3,872,575.96
Step by Step Solution
- Step 1: Write the proportion equation
5,129,309.36 : 7,078,614.69 = 2,806,147.95 : x - Step 2: Convert to fraction form
5,129,309.36/7,078,614.69 = 2,806,147.95/x - Step 3: Cross multiply
5,129,309.36x = 7,078,614.69 × 2,806,147.95 - Step 4: Simplify right side
5,129,309.36x = 19,863,640,101,183.39 - Step 5: Solve for x
x = 19,863,640,101,183.39/5,129,309.36 - Step 6: Final answer
x = 3,872,575.96
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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.