Finding the Fourth Proportional to 4,138,353,745.38, 5,718,398,519.93 and 2,946,854,138.72
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Solution
The fourth proportional to 4,138,353,745.38, 5,718,398,519.93 and 2,946,854,138.72 is: 4,071,978,226.63
Step by Step Solution
- Step 1: Write the proportion equation
4,138,353,745.38 : 5,718,398,519.93 = 2,946,854,138.72 : x - Step 2: Convert to fraction form
4,138,353,745.38/5,718,398,519.93 = 2,946,854,138.72/x - Step 3: Cross multiply
4,138,353,745.38x = 5,718,398,519.93 × 2,946,854,138.72 - Step 4: Simplify right side
4,138,353,745.38x = 16,851,286,345,262,718,976 - Step 5: Solve for x
x = 16,851,286,345,262,718,976/4,138,353,745.38 - Step 6: Final answer
x = 4,071,978,226.63
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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.