Finding the Fourth Proportional to 2,166,987,674.80, 3,250,481,512.20 and 531,212,276.80
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Solution
The fourth proportional to 2,166,987,674.80, 3,250,481,512.20 and 531,212,276.80 is: 796,818,415.20
Step by Step Solution
- Step 1: Write the proportion equation
2,166,987,674.80 : 3,250,481,512.20 = 531,212,276.80 : x - Step 2: Convert to fraction form
2,166,987,674.80/3,250,481,512.20 = 531,212,276.80/x - Step 3: Cross multiply
2,166,987,674.80x = 3,250,481,512.20 × 531,212,276.80 - Step 4: Simplify right side
2,166,987,674.80x = 1,726,695,684,792,068,864 - Step 5: Solve for x
x = 1,726,695,684,792,068,864/2,166,987,674.80 - Step 6: Final answer
x = 796,818,415.20
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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.