Finding the Fourth Proportional to 12,879,126.40, 19,318,689.60 and 8,344,163.20
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Solution
The fourth proportional to 12,879,126.40, 19,318,689.60 and 8,344,163.20 is: 12,516,244.80
Step by Step Solution
- Step 1: Write the proportion equation
12,879,126.40 : 19,318,689.60 = 8,344,163.20 : x - Step 2: Convert to fraction form
12,879,126.40/19,318,689.60 = 8,344,163.20/x - Step 3: Cross multiply
12,879,126.40x = 19,318,689.60 × 8,344,163.20 - Step 4: Simplify right side
12,879,126.40x = 161,198,298,832,542.75 - Step 5: Solve for x
x = 161,198,298,832,542.75/12,879,126.40 - Step 6: Final answer
x = 12,516,244.80
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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.