Finding the Fourth Proportional to 1,990,816.10, 2,747,207.85 and 1,131,257.06
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Solution
The fourth proportional to 1,990,816.10, 2,747,207.85 and 1,131,257.06 is: 1,561,067.48
Step by Step Solution
- Step 1: Write the proportion equation
1,990,816.10 : 2,747,207.85 = 1,131,257.06 : x - Step 2: Convert to fraction form
1,990,816.10/2,747,207.85 = 1,131,257.06/x - Step 3: Cross multiply
1,990,816.10x = 2,747,207.85 × 1,131,257.06 - Step 4: Simplify right side
1,990,816.10x = 3,107,798,275,599.92 - Step 5: Solve for x
x = 3,107,798,275,599.92/1,990,816.10 - Step 6: Final answer
x = 1,561,067.48
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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.