Finding the Fourth Proportional to 5,159,928.74, 7,120,706.21 and 2,836,860.78
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Solution
The fourth proportional to 5,159,928.74, 7,120,706.21 and 2,836,860.78 is: 3,914,870.38
Step by Step Solution
- Step 1: Write the proportion equation
5,159,928.74 : 7,120,706.21 = 2,836,860.78 : x - Step 2: Convert to fraction form
5,159,928.74/7,120,706.21 = 2,836,860.78/x - Step 3: Cross multiply
5,159,928.74x = 7,120,706.21 × 2,836,860.78 - Step 4: Simplify right side
5,159,928.74x = 20,200,452,156,154.05 - Step 5: Solve for x
x = 20,200,452,156,154.05/5,159,928.74 - Step 6: Final answer
x = 3,914,870.38
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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.