Finding the Fourth Proportional to 3,942,139.68, 5,440,152.24 and 2,131,303.68
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Solution
The fourth proportional to 3,942,139.68, 5,440,152.24 and 2,131,303.68 is: 2,941,198.80
Step by Step Solution
- Step 1: Write the proportion equation
3,942,139.68 : 5,440,152.24 = 2,131,303.68 : x - Step 2: Convert to fraction form
3,942,139.68/5,440,152.24 = 2,131,303.68/x - Step 3: Cross multiply
3,942,139.68x = 5,440,152.24 × 2,131,303.68 - Step 4: Simplify right side
3,942,139.68x = 11,594,616,488,872.24 - Step 5: Solve for x
x = 11,594,616,488,872.24/3,942,139.68 - Step 6: Final answer
x = 2,941,198.80
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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.