Finding the Fourth Proportional to 1,305,659,586.80, 1,958,489,380.20 and 917,920,233.20
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Solution
The fourth proportional to 1,305,659,586.80, 1,958,489,380.20 and 917,920,233.20 is: 1,376,880,349.80
Step by Step Solution
- Step 1: Write the proportion equation
1,305,659,586.80 : 1,958,489,380.20 = 917,920,233.20 : x - Step 2: Convert to fraction form
1,305,659,586.80/1,958,489,380.20 = 917,920,233.20/x - Step 3: Cross multiply
1,305,659,586.80x = 1,958,489,380.20 × 917,920,233.20 - Step 4: Simplify right side
1,305,659,586.80x = 1,797,737,028,592,907,520 - Step 5: Solve for x
x = 1,797,737,028,592,907,520/1,305,659,586.80 - Step 6: Final answer
x = 1,376,880,349.80
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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.