Finding the Fourth Proportional to 3,889,741.45, 5,362,853.18 and 3,189,442.12
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Solution
The fourth proportional to 3,889,741.45, 5,362,853.18 and 3,189,442.12 is: 4,397,338.50
Step by Step Solution
- Step 1: Write the proportion equation
3,889,741.45 : 5,362,853.18 = 3,189,442.12 : x - Step 2: Convert to fraction form
3,889,741.45/5,362,853.18 = 3,189,442.12/x - Step 3: Cross multiply
3,889,741.45x = 5,362,853.18 × 3,189,442.12 - Step 4: Simplify right side
3,889,741.45x = 17,104,509,815,667.94 - Step 5: Solve for x
x = 17,104,509,815,667.94/3,889,741.45 - Step 6: Final answer
x = 4,397,338.50
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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.