Finding the Fourth Proportional to 1,276,517,793.99, 1,912,095,204.47 and 809,939,052.20
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Solution
The fourth proportional to 1,276,517,793.99, 1,912,095,204.47 and 809,939,052.20 is: 1,213,207,199.23
Step by Step Solution
- Step 1: Write the proportion equation
1,276,517,793.99 : 1,912,095,204.47 = 809,939,052.20 : x - Step 2: Convert to fraction form
1,276,517,793.99/1,912,095,204.47 = 809,939,052.20/x - Step 3: Cross multiply
1,276,517,793.99x = 1,912,095,204.47 × 809,939,052.20 - Step 4: Simplify right side
1,276,517,793.99x = 1,548,680,577,610,986,752 - Step 5: Solve for x
x = 1,548,680,577,610,986,752/1,276,517,793.99 - Step 6: Final answer
x = 1,213,207,199.23
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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.