Finding the Fourth Proportional to 7,781,244,321.36, 10,738,102,968 and 4,212,950,790
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Solution
The fourth proportional to 7,781,244,321.36, 10,738,102,968 and 4,212,950,790 is: 5,813,864,404.43
Step by Step Solution
- Step 1: Write the proportion equation
7,781,244,321.36 : 10,738,102,968 = 4,212,950,790 : x - Step 2: Convert to fraction form
7,781,244,321.36/10,738,102,968 = 4,212,950,790/x - Step 3: Cross multiply
7,781,244,321.36x = 10,738,102,968 × 4,212,950,790 - Step 4: Simplify right side
7,781,244,321.36x = 45,239,099,382,136,946,688 - Step 5: Solve for x
x = 45,239,099,382,136,946,688/7,781,244,321.36 - Step 6: Final answer
x = 5,813,864,404.43
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.