Finding the Fourth Proportional to 843,918,405.80, 1,265,877,608.70 and 828,801,861.80
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Solution
The fourth proportional to 843,918,405.80, 1,265,877,608.70 and 828,801,861.80 is: 1,243,202,792.70
Step by Step Solution
- Step 1: Write the proportion equation
843,918,405.80 : 1,265,877,608.70 = 828,801,861.80 : x - Step 2: Convert to fraction form
843,918,405.80/1,265,877,608.70 = 828,801,861.80/x - Step 3: Cross multiply
843,918,405.80x = 1,265,877,608.70 × 828,801,861.80 - Step 4: Simplify right side
843,918,405.80x = 1,049,161,718,901,491,840 - Step 5: Solve for x
x = 1,049,161,718,901,491,840/843,918,405.80 - Step 6: Final answer
x = 1,243,202,792.70
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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.