Finding the Fourth Proportional to 8,193,643.80, 12,290,465.70 and 3,942,115.80
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Solution
The fourth proportional to 8,193,643.80, 12,290,465.70 and 3,942,115.80 is: 5,913,173.70
Step by Step Solution
- Step 1: Write the proportion equation
8,193,643.80 : 12,290,465.70 = 3,942,115.80 : x - Step 2: Convert to fraction form
8,193,643.80/12,290,465.70 = 3,942,115.80/x - Step 3: Cross multiply
8,193,643.80x = 12,290,465.70 × 3,942,115.80 - Step 4: Simplify right side
8,193,643.80x = 48,450,439,025,328.05 - Step 5: Solve for x
x = 48,450,439,025,328.05/8,193,643.80 - Step 6: Final answer
x = 5,913,173.70
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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.