Finding the Fourth Proportional to 8,190,912.90, 12,286,369.35 and 2,207,280.90
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Solution
The fourth proportional to 8,190,912.90, 12,286,369.35 and 2,207,280.90 is: 3,310,921.35
Step by Step Solution
- Step 1: Write the proportion equation
8,190,912.90 : 12,286,369.35 = 2,207,280.90 : x - Step 2: Convert to fraction form
8,190,912.90/12,286,369.35 = 2,207,280.90/x - Step 3: Cross multiply
8,190,912.90x = 12,286,369.35 × 2,207,280.90 - Step 4: Simplify right side
8,190,912.90x = 27,119,468,396,600.41 - Step 5: Solve for x
x = 27,119,468,396,600.41/8,190,912.90 - Step 6: Final answer
x = 3,310,921.35
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1.5x scale
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.