Finding the Fourth Proportional to 2,638,605,510.40, 3,958,356,163.20 and 798,343,571.20
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Solution
The fourth proportional to 2,638,605,510.40, 3,958,356,163.20 and 798,343,571.20 is: 1,197,650,873.90
Step by Step Solution
- Step 1: Write the proportion equation
2,638,605,510.40 : 3,958,356,163.20 = 798,343,571.20 : x - Step 2: Convert to fraction form
2,638,605,510.40/3,958,356,163.20 = 798,343,571.20/x - Step 3: Cross multiply
2,638,605,510.40x = 3,958,356,163.20 × 798,343,571.20 - Step 4: Simplify right side
2,638,605,510.40x = 3,160,128,195,410,617,856 - Step 5: Solve for x
x = 3,160,128,195,410,617,856/2,638,605,510.40 - Step 6: Final answer
x = 1,197,650,873.90
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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.