Finding the Fourth Proportional to 3,940,790.94, 5,438,300.79 and 2,129,954.94
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Solution
The fourth proportional to 3,940,790.94, 5,438,300.79 and 2,129,954.94 is: 2,939,342.84
Step by Step Solution
- Step 1: Write the proportion equation
3,940,790.94 : 5,438,300.79 = 2,129,954.94 : x - Step 2: Convert to fraction form
3,940,790.94/5,438,300.79 = 2,129,954.94/x - Step 3: Cross multiply
3,940,790.94x = 5,438,300.79 × 2,129,954.94 - Step 4: Simplify right side
3,940,790.94x = 11,583,335,632,866.40 - Step 5: Solve for x
x = 11,583,335,632,866.40/3,940,790.94 - Step 6: Final answer
x = 2,939,342.84
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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.