Finding the Fourth Proportional to 3,911,988.96, 5,398,803.90 and 2,193,220.80
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Solution
The fourth proportional to 3,911,988.96, 5,398,803.90 and 2,193,220.80 is: 3,026,789.99
Step by Step Solution
- Step 1: Write the proportion equation
3,911,988.96 : 5,398,803.90 = 2,193,220.80 : x - Step 2: Convert to fraction form
3,911,988.96/5,398,803.90 = 2,193,220.80/x - Step 3: Cross multiply
3,911,988.96x = 5,398,803.90 × 2,193,220.80 - Step 4: Simplify right side
3,911,988.96x = 11,840,769,008,601.12 - Step 5: Solve for x
x = 11,840,769,008,601.12/3,911,988.96 - Step 6: Final answer
x = 3,026,789.99
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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.