Finding the Fourth Proportional to 1,330,128,443.20, 1,995,192,664.80 and 1,307,453,627.20
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Solution
The fourth proportional to 1,330,128,443.20, 1,995,192,664.80 and 1,307,453,627.20 is: 1,961,180,440.80
Step by Step Solution
- Step 1: Write the proportion equation
1,330,128,443.20 : 1,995,192,664.80 = 1,307,453,627.20 : x - Step 2: Convert to fraction form
1,330,128,443.20/1,995,192,664.80 = 1,307,453,627.20/x - Step 3: Cross multiply
1,330,128,443.20x = 1,995,192,664.80 × 1,307,453,627.20 - Step 4: Simplify right side
1,330,128,443.20x = 2,608,621,886,555,593,728 - Step 5: Solve for x
x = 2,608,621,886,555,593,728/1,330,128,443.20 - Step 6: Final answer
x = 1,961,180,440.80
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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.