Finding the Fourth Proportional to 3,908,529,737.40, 5,863,644,911.70 and 1,287,887,878.20
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Solution
The fourth proportional to 3,908,529,737.40, 5,863,644,911.70 and 1,287,887,878.20 is: 1,932,111,998.94
Step by Step Solution
- Step 1: Write the proportion equation
3,908,529,737.40 : 5,863,644,911.70 = 1,287,887,878.20 : x - Step 2: Convert to fraction form
3,908,529,737.40/5,863,644,911.70 = 1,287,887,878.20/x - Step 3: Cross multiply
3,908,529,737.40x = 5,863,644,911.70 × 1,287,887,878.20 - Step 4: Simplify right side
3,908,529,737.40x = 7,551,717,203,847,539,712 - Step 5: Solve for x
x = 7,551,717,203,847,539,712/3,908,529,737.40 - Step 6: Final answer
x = 1,932,111,998.94
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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.