Finding the Fourth Proportional to 3,940,789.62, 5,438,288.25 and 2,129,953.62
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Solution
The fourth proportional to 3,940,789.62, 5,438,288.25 and 2,129,953.62 is: 2,939,335.23
Step by Step Solution
- Step 1: Write the proportion equation
3,940,789.62 : 5,438,288.25 = 2,129,953.62 : x - Step 2: Convert to fraction form
3,940,789.62/5,438,288.25 = 2,129,953.62/x - Step 3: Cross multiply
3,940,789.62x = 5,438,288.25 × 2,129,953.62 - Step 4: Simplify right side
3,940,789.62x = 11,583,301,744,690.96 - Step 5: Solve for x
x = 11,583,301,744,690.96/3,940,789.62 - Step 6: Final answer
x = 2,939,335.23
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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.