Finding the Fourth Proportional to 419,906,998.60, 629,860,497.90 and 265,718,249.80
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Solution
The fourth proportional to 419,906,998.60, 629,860,497.90 and 265,718,249.80 is: 398,577,374.70
Step by Step Solution
- Step 1: Write the proportion equation
419,906,998.60 : 629,860,497.90 = 265,718,249.80 : x - Step 2: Convert to fraction form
419,906,998.60/629,860,497.90 = 265,718,249.80/x - Step 3: Cross multiply
419,906,998.60x = 629,860,497.90 × 265,718,249.80 - Step 4: Simplify right side
419,906,998.60x = 167,365,429,120,144,576 - Step 5: Solve for x
x = 167,365,429,120,144,576/419,906,998.60 - Step 6: Final answer
x = 398,577,374.70
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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.