Finding the Fourth Proportional to 1,328,603,915.80, 1,992,905,873.70 and 984,230,147.80
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Solution
The fourth proportional to 1,328,603,915.80, 1,992,905,873.70 and 984,230,147.80 is: 1,476,345,221.70
Step by Step Solution
- Step 1: Write the proportion equation
1,328,603,915.80 : 1,992,905,873.70 = 984,230,147.80 : x - Step 2: Convert to fraction form
1,328,603,915.80/1,992,905,873.70 = 984,230,147.80/x - Step 3: Cross multiply
1,328,603,915.80x = 1,992,905,873.70 × 984,230,147.80 - Step 4: Simplify right side
1,328,603,915.80x = 1,961,478,042,623,239,168 - Step 5: Solve for x
x = 1,961,478,042,623,239,168/1,328,603,915.80 - Step 6: Final answer
x = 1,476,345,221.70
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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.