Finding the Fourth Proportional to 3,431,926.80, 5,147,890.20 and 873,136.80
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Solution
The fourth proportional to 3,431,926.80, 5,147,890.20 and 873,136.80 is: 1,309,705.20
Step by Step Solution
- Step 1: Write the proportion equation
3,431,926.80 : 5,147,890.20 = 873,136.80 : x - Step 2: Convert to fraction form
3,431,926.80/5,147,890.20 = 873,136.80/x - Step 3: Cross multiply
3,431,926.80x = 5,147,890.20 × 873,136.80 - Step 4: Simplify right side
3,431,926.80x = 4,494,812,375,979.36 - Step 5: Solve for x
x = 4,494,812,375,979.36/3,431,926.80 - Step 6: Final answer
x = 1,309,705.20
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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.