Finding the Fourth Proportional to 5,161,212.86, 7,122,501.42 and 2,838,255.14
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Solution
The fourth proportional to 5,161,212.86, 7,122,501.42 and 2,838,255.14 is: 3,916,807.31
Step by Step Solution
- Step 1: Write the proportion equation
5,161,212.86 : 7,122,501.42 = 2,838,255.14 : x - Step 2: Convert to fraction form
5,161,212.86/7,122,501.42 = 2,838,255.14/x - Step 3: Cross multiply
5,161,212.86x = 7,122,501.42 × 2,838,255.14 - Step 4: Simplify right side
5,161,212.86x = 20,215,476,264,972.30 - Step 5: Solve for x
x = 20,215,476,264,972.30/5,161,212.86 - Step 6: Final answer
x = 3,916,807.31
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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.