Finding the Fourth Proportional to 2,172,801,081.60, 3,259,201,622.40 and 792,660,614.40
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Solution
The fourth proportional to 2,172,801,081.60, 3,259,201,622.40 and 792,660,614.40 is: 1,188,990,921.60
Step by Step Solution
- Step 1: Write the proportion equation
2,172,801,081.60 : 3,259,201,622.40 = 792,660,614.40 : x - Step 2: Convert to fraction form
2,172,801,081.60/3,259,201,622.40 = 792,660,614.40/x - Step 3: Cross multiply
2,172,801,081.60x = 3,259,201,622.40 × 792,660,614.40 - Step 4: Simplify right side
2,172,801,081.60x = 2,583,440,760,465,060,864 - Step 5: Solve for x
x = 2,583,440,760,465,060,864/2,172,801,081.60 - Step 6: Final answer
x = 1,188,990,921.60
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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.