Finding the Fourth Proportional to 3,897,288,974.40, 5,378,328,578.16 and 2,113,202,608.80
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Solution
The fourth proportional to 3,897,288,974.40, 5,378,328,578.16 and 2,113,202,608.80 is: 2,916,257,443.83
Step by Step Solution
- Step 1: Write the proportion equation
3,897,288,974.40 : 5,378,328,578.16 = 2,113,202,608.80 : x - Step 2: Convert to fraction form
3,897,288,974.40/5,378,328,578.16 = 2,113,202,608.80/x - Step 3: Cross multiply
3,897,288,974.40x = 5,378,328,578.16 × 2,113,202,608.80 - Step 4: Simplify right side
3,897,288,974.40x = 11,365,497,982,351,306,752 - Step 5: Solve for x
x = 11,365,497,982,351,306,752/3,897,288,974.40 - Step 6: Final answer
x = 2,916,257,443.83
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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.