Finding the Fourth Proportional to 8,420,163.10, 11,617,172.62 and 5,153,572.42
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Solution
The fourth proportional to 8,420,163.10, 11,617,172.62 and 5,153,572.42 is: 7,110,306.50
Step by Step Solution
- Step 1: Write the proportion equation
8,420,163.10 : 11,617,172.62 = 5,153,572.42 : x - Step 2: Convert to fraction form
8,420,163.10/11,617,172.62 = 5,153,572.42/x - Step 3: Cross multiply
8,420,163.10x = 11,617,172.62 × 5,153,572.42 - Step 4: Simplify right side
8,420,163.10x = 59,869,940,370,884.28 - Step 5: Solve for x
x = 59,869,940,370,884.28/8,420,163.10 - Step 6: Final answer
x = 7,110,306.50
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1.5x scale
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.