Finding the Fourth Proportional to 3,886,388.82, 5,363,226.09 and 2,167,620.66
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Solution
The fourth proportional to 3,886,388.82, 5,363,226.09 and 2,167,620.66 is: 2,991,321.82
Step by Step Solution
- Step 1: Write the proportion equation
3,886,388.82 : 5,363,226.09 = 2,167,620.66 : x - Step 2: Convert to fraction form
3,886,388.82/5,363,226.09 = 2,167,620.66/x - Step 3: Cross multiply
3,886,388.82x = 5,363,226.09 × 2,167,620.66 - Step 4: Simplify right side
3,886,388.82x = 11,625,439,676,935.02 - Step 5: Solve for x
x = 11,625,439,676,935.02/3,886,388.82 - Step 6: Final answer
x = 2,991,321.82
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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.