Finding the Fourth Proportional to 1,271,102,261.28, 1,906,659,481.35 and 385,795,311.18
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Solution
The fourth proportional to 1,271,102,261.28, 1,906,659,481.35 and 385,795,311.18 is: 578,694,814.99
Step by Step Solution
- Step 1: Write the proportion equation
1,271,102,261.28 : 1,906,659,481.35 = 385,795,311.18 : x - Step 2: Convert to fraction form
1,271,102,261.28/1,906,659,481.35 = 385,795,311.18/x - Step 3: Cross multiply
1,271,102,261.28x = 1,906,659,481.35 × 385,795,311.18 - Step 4: Simplify right side
1,271,102,261.28x = 735,580,287,921,720,576 - Step 5: Solve for x
x = 735,580,287,921,720,576/1,271,102,261.28 - Step 6: Final answer
x = 578,694,814.99
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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.