Finding the Fourth Proportional to 2,126,268,876.40, 3,189,403,314.60 and 1,305,720,473.20
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Solution
The fourth proportional to 2,126,268,876.40, 3,189,403,314.60 and 1,305,720,473.20 is: 1,958,580,709.80
Step by Step Solution
- Step 1: Write the proportion equation
2,126,268,876.40 : 3,189,403,314.60 = 1,305,720,473.20 : x - Step 2: Convert to fraction form
2,126,268,876.40/3,189,403,314.60 = 1,305,720,473.20/x - Step 3: Cross multiply
2,126,268,876.40x = 3,189,403,314.60 × 1,305,720,473.20 - Step 4: Simplify right side
2,126,268,876.40x = 4,164,469,205,165,160,448 - Step 5: Solve for x
x = 4,164,469,205,165,160,448/2,126,268,876.40 - Step 6: Final answer
x = 1,958,580,709.80
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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.