Finding the Fourth Proportional to 3,823,347,761.79, 5,275,519,496.48 and 2,129,760,260.43
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Solution
The fourth proportional to 3,823,347,761.79, 5,275,519,496.48 and 2,129,760,260.43 is: 2,938,678,999.85
Step by Step Solution
- Step 1: Write the proportion equation
3,823,347,761.79 : 5,275,519,496.48 = 2,129,760,260.43 : x - Step 2: Convert to fraction form
3,823,347,761.79/5,275,519,496.48 = 2,129,760,260.43/x - Step 3: Cross multiply
3,823,347,761.79x = 5,275,519,496.48 × 2,129,760,260.43 - Step 4: Simplify right side
3,823,347,761.79x = 11,235,591,776,689,762,304 - Step 5: Solve for x
x = 11,235,591,776,689,762,304/3,823,347,761.79 - Step 6: Final answer
x = 2,938,678,999.85
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1.5x scale
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.