Finding the Fourth Proportional to 3,960,228,121.80, 5,940,342,182.70 and 1,994,321,574.60
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Solution
The fourth proportional to 3,960,228,121.80, 5,940,342,182.70 and 1,994,321,574.60 is: 2,991,482,361.90
Step by Step Solution
- Step 1: Write the proportion equation
3,960,228,121.80 : 5,940,342,182.70 = 1,994,321,574.60 : x - Step 2: Convert to fraction form
3,960,228,121.80/5,940,342,182.70 = 1,994,321,574.60/x - Step 3: Cross multiply
3,960,228,121.80x = 5,940,342,182.70 × 1,994,321,574.60 - Step 4: Simplify right side
3,960,228,121.80x = 11,846,952,575,465,064,448 - Step 5: Solve for x
x = 11,846,952,575,465,064,448/3,960,228,121.80 - Step 6: Final answer
x = 2,991,482,361.90
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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.