Finding the Fourth Proportional to 660,694,131.96, 911,781,873.48 and 378,491,113.68
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Solution
The fourth proportional to 660,694,131.96, 911,781,873.48 and 378,491,113.68 is: 522,331,469.33
Step by Step Solution
- Step 1: Write the proportion equation
660,694,131.96 : 911,781,873.48 = 378,491,113.68 : x - Step 2: Convert to fraction form
660,694,131.96/911,781,873.48 = 378,491,113.68/x - Step 3: Cross multiply
660,694,131.96x = 911,781,873.48 × 378,491,113.68 - Step 4: Simplify right side
660,694,131.96x = 345,101,336,726,682,048 - Step 5: Solve for x
x = 345,101,336,726,682,048/660,694,131.96 - Step 6: Final answer
x = 522,331,469.33
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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.