Finding the Fourth Proportional to 3,143,121,490.80, 4,714,682,236.20 and 932,410,911.60
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Solution
The fourth proportional to 3,143,121,490.80, 4,714,682,236.20 and 932,410,911.60 is: 1,398,616,367.40
Step by Step Solution
- Step 1: Write the proportion equation
3,143,121,490.80 : 4,714,682,236.20 = 932,410,911.60 : x - Step 2: Convert to fraction form
3,143,121,490.80/4,714,682,236.20 = 932,410,911.60/x - Step 3: Cross multiply
3,143,121,490.80x = 4,714,682,236.20 × 932,410,911.60 - Step 4: Simplify right side
3,143,121,490.80x = 4,396,021,161,759,568,384 - Step 5: Solve for x
x = 4,396,021,161,759,568,384/3,143,121,490.80 - Step 6: Final answer
x = 1,398,616,367.40
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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.