Finding the Fourth Proportional to 289,706,919.40, 434,560,379.10 and 263,347,445.80
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Solution
The fourth proportional to 289,706,919.40, 434,560,379.10 and 263,347,445.80 is: 395,021,168.70
Step by Step Solution
- Step 1: Write the proportion equation
289,706,919.40 : 434,560,379.10 = 263,347,445.80 : x - Step 2: Convert to fraction form
289,706,919.40/434,560,379.10 = 263,347,445.80/x - Step 3: Cross multiply
289,706,919.40x = 434,560,379.10 × 263,347,445.80 - Step 4: Simplify right side
289,706,919.40x = 114,440,365,881,864,720 - Step 5: Solve for x
x = 114,440,365,881,864,720/289,706,919.40 - Step 6: Final answer
x = 395,021,168.70
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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.