Finding the Fourth Proportional to 1,276,517,790.99, 1,912,095,199.95 and 809,939,049.21
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Solution
The fourth proportional to 1,276,517,790.99, 1,912,095,199.95 and 809,939,049.21 is: 1,213,207,194.74
Step by Step Solution
- Step 1: Write the proportion equation
1,276,517,790.99 : 1,912,095,199.95 = 809,939,049.21 : x - Step 2: Convert to fraction form
1,276,517,790.99/1,912,095,199.95 = 809,939,049.21/x - Step 3: Cross multiply
1,276,517,790.99x = 1,912,095,199.95 × 809,939,049.21 - Step 4: Simplify right side
1,276,517,790.99x = 1,548,680,568,246,508,032 - Step 5: Solve for x
x = 1,548,680,568,246,508,032/1,276,517,790.99 - Step 6: Final answer
x = 1,213,207,194.74
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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.