Finding the Fourth Proportional to 18,206,798,163.20, 27,310,197,244.80 and 5,120,594,979.20
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Solution
The fourth proportional to 18,206,798,163.20, 27,310,197,244.80 and 5,120,594,979.20 is: 7,680,892,468.80
Step by Step Solution
- Step 1: Write the proportion equation
18,206,798,163.20 : 27,310,197,244.80 = 5,120,594,979.20 : x - Step 2: Convert to fraction form
18,206,798,163.20/27,310,197,244.80 = 5,120,594,979.20/x - Step 3: Cross multiply
18,206,798,163.20x = 27,310,197,244.80 × 5,120,594,979.20 - Step 4: Simplify right side
18,206,798,163.20x = 139,844,458,892,684,541,952 - Step 5: Solve for x
x = 139,844,458,892,684,541,952/18,206,798,163.20 - Step 6: Final answer
x = 7,680,892,468.80
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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.