Finding the Fourth Proportional to 3,990,732.95, 5,984,838.09 and 1,431,890.70
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Solution
The fourth proportional to 3,990,732.95, 5,984,838.09 and 1,431,890.70 is: 2,147,383.48
Step by Step Solution
- Step 1: Write the proportion equation
3,990,732.95 : 5,984,838.09 = 1,431,890.70 : x - Step 2: Convert to fraction form
3,990,732.95/5,984,838.09 = 1,431,890.70/x - Step 3: Cross multiply
3,990,732.95x = 5,984,838.09 × 1,431,890.70 - Step 4: Simplify right side
3,990,732.95x = 8,569,634,002,076.76 - Step 5: Solve for x
x = 8,569,634,002,076.76/3,990,732.95 - Step 6: Final answer
x = 2,147,383.48
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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.