Finding the Fourth Proportional to 2,987,397.99, 4,481,099.69 and 1,280,433.56
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Solution
The fourth proportional to 2,987,397.99, 4,481,099.69 and 1,280,433.56 is: 1,920,651.49
Step by Step Solution
- Step 1: Write the proportion equation
2,987,397.99 : 4,481,099.69 = 1,280,433.56 : x - Step 2: Convert to fraction form
2,987,397.99/4,481,099.69 = 1,280,433.56/x - Step 3: Cross multiply
2,987,397.99x = 4,481,099.69 × 1,280,433.56 - Step 4: Simplify right side
2,987,397.99x = 5,737,750,399,973.93 - Step 5: Solve for x
x = 5,737,750,399,973.93/2,987,397.99 - Step 6: Final answer
x = 1,920,651.49
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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.