Finding the Fourth Proportional to 3,985,731.42, 5,979,546.23 and 1,290,057.09
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Solution
The fourth proportional to 3,985,731.42, 5,979,546.23 and 1,290,057.09 is: 1,935,392.83
Step by Step Solution
- Step 1: Write the proportion equation
3,985,731.42 : 5,979,546.23 = 1,290,057.09 : x - Step 2: Convert to fraction form
3,985,731.42/5,979,546.23 = 1,290,057.09/x - Step 3: Cross multiply
3,985,731.42x = 5,979,546.23 × 1,290,057.09 - Step 4: Simplify right side
3,985,731.42x = 7,713,956,002,543.99 - Step 5: Solve for x
x = 7,713,956,002,543.99/3,985,731.42 - Step 6: Final answer
x = 1,935,392.83
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.