Finding the Fourth Proportional to 3,942,515.62, 5,440,639.86 and 2,288,816.14
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Solution
The fourth proportional to 3,942,515.62, 5,440,639.86 and 2,288,816.14 is: 3,158,547.87
Step by Step Solution
- Step 1: Write the proportion equation
3,942,515.62 : 5,440,639.86 = 2,288,816.14 : x - Step 2: Convert to fraction form
3,942,515.62/5,440,639.86 = 2,288,816.14/x - Step 3: Cross multiply
3,942,515.62x = 5,440,639.86 × 2,288,816.14 - Step 4: Simplify right side
3,942,515.62x = 12,452,624,323,495.34 - Step 5: Solve for x
x = 12,452,624,323,495.34/3,942,515.62 - Step 6: Final answer
x = 3,158,547.87
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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.