Finding the Fourth Proportional to 3,985,614.80, 5,979,370.77 and 1,289,940.02
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Solution
The fourth proportional to 3,985,614.80, 5,979,370.77 and 1,289,940.02 is: 1,935,217.03
Step by Step Solution
- Step 1: Write the proportion equation
3,985,614.80 : 5,979,370.77 = 1,289,940.02 : x - Step 2: Convert to fraction form
3,985,614.80/5,979,370.77 = 1,289,940.02/x - Step 3: Cross multiply
3,985,614.80x = 5,979,370.77 × 1,289,940.02 - Step 4: Simplify right side
3,985,614.80x = 7,713,029,650,641.22 - Step 5: Solve for x
x = 7,713,029,650,641.22/3,985,614.80 - Step 6: Final answer
x = 1,935,217.03
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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.