Finding the Fourth Proportional to 2,165,863.41, 2,987,953.28 and 1,305,945.95
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Solution
The fourth proportional to 2,165,863.41, 2,987,953.28 and 1,305,945.95 is: 1,801,639.68
Step by Step Solution
- Step 1: Write the proportion equation
2,165,863.41 : 2,987,953.28 = 1,305,945.95 : x - Step 2: Convert to fraction form
2,165,863.41/2,987,953.28 = 1,305,945.95/x - Step 3: Cross multiply
2,165,863.41x = 2,987,953.28 × 1,305,945.95 - Step 4: Simplify right side
2,165,863.41x = 3,902,105,463,335.72 - Step 5: Solve for x
x = 3,902,105,463,335.72/2,165,863.41 - Step 6: Final answer
x = 1,801,639.68
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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.