Finding the Fourth Proportional to 3,761,478.38, 5,190,901.94 and 2,129,842.74
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Solution
The fourth proportional to 3,761,478.38, 5,190,901.94 and 2,129,842.74 is: 2,939,217.96
Step by Step Solution
- Step 1: Write the proportion equation
3,761,478.38 : 5,190,901.94 = 2,129,842.74 : x - Step 2: Convert to fraction form
3,761,478.38/5,190,901.94 = 2,129,842.74/x - Step 3: Cross multiply
3,761,478.38x = 5,190,901.94 × 2,129,842.74 - Step 4: Simplify right side
3,761,478.38x = 11,055,804,810,960.92 - Step 5: Solve for x
x = 11,055,804,810,960.92/3,761,478.38 - Step 6: Final answer
x = 2,939,217.96
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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.