Finding the Fourth Proportional to 2,800,856.85, 3,866,829.62 and 2,639,431.64
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Solution
The fourth proportional to 2,800,856.85, 3,866,829.62 and 2,639,431.64 is: 3,643,967.90
Step by Step Solution
- Step 1: Write the proportion equation
2,800,856.85 : 3,866,829.62 = 2,639,431.64 : x - Step 2: Convert to fraction form
2,800,856.85/3,866,829.62 = 2,639,431.64/x - Step 3: Cross multiply
2,800,856.85x = 3,866,829.62 × 2,639,431.64 - Step 4: Simplify right side
2,800,856.85x = 10,206,232,445,517.18 - Step 5: Solve for x
x = 10,206,232,445,517.18/2,800,856.85 - Step 6: Final answer
x = 3,643,967.90
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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.