Finding the Fourth Proportional to 1,170,083,906.10, 1,755,125,859.15 and 393,471,458.10
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Solution
The fourth proportional to 1,170,083,906.10, 1,755,125,859.15 and 393,471,458.10 is: 590,207,187.15
Step by Step Solution
- Step 1: Write the proportion equation
1,170,083,906.10 : 1,755,125,859.15 = 393,471,458.10 : x - Step 2: Convert to fraction form
1,170,083,906.10/1,755,125,859.15 = 393,471,458.10/x - Step 3: Cross multiply
1,170,083,906.10x = 1,755,125,859.15 × 393,471,458.10 - Step 4: Simplify right side
1,170,083,906.10x = 690,591,930,948,765,824 - Step 5: Solve for x
x = 690,591,930,948,765,824/1,170,083,906.10 - Step 6: Final answer
x = 590,207,187.15
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Double scale
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Similar ratio
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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.