Finding the Fourth Proportional to 1,920,239,021.20, 2,880,358,531.80 and 1,889,628,019.60
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Solution
The fourth proportional to 1,920,239,021.20, 2,880,358,531.80 and 1,889,628,019.60 is: 2,834,442,029.40
Step by Step Solution
- Step 1: Write the proportion equation
1,920,239,021.20 : 2,880,358,531.80 = 1,889,628,019.60 : x - Step 2: Convert to fraction form
1,920,239,021.20/2,880,358,531.80 = 1,889,628,019.60/x - Step 3: Cross multiply
1,920,239,021.20x = 2,880,358,531.80 × 1,889,628,019.60 - Step 4: Simplify right side
1,920,239,021.20x = 5,442,806,188,183,197,696 - Step 5: Solve for x
x = 5,442,806,188,183,197,696/1,920,239,021.20 - Step 6: Final answer
x = 2,834,442,029.40
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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.