Finding the Fourth Proportional to 2,021,136.30, 3,031,704.45 and 1,212,821.10
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Solution
The fourth proportional to 2,021,136.30, 3,031,704.45 and 1,212,821.10 is: 1,819,231.65
Step by Step Solution
- Step 1: Write the proportion equation
2,021,136.30 : 3,031,704.45 = 1,212,821.10 : x - Step 2: Convert to fraction form
2,021,136.30/3,031,704.45 = 1,212,821.10/x - Step 3: Cross multiply
2,021,136.30x = 3,031,704.45 × 1,212,821.10 - Step 4: Simplify right side
2,021,136.30x = 3,676,915,125,923.90 - Step 5: Solve for x
x = 3,676,915,125,923.90/2,021,136.30 - Step 6: Final answer
x = 1,819,231.65
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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.