Finding the Fourth Proportional to 1,259,713,082.20, 1,889,569,623.30 and 441,530,138.20
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Solution
The fourth proportional to 1,259,713,082.20, 1,889,569,623.30 and 441,530,138.20 is: 662,295,207.30
Step by Step Solution
- Step 1: Write the proportion equation
1,259,713,082.20 : 1,889,569,623.30 = 441,530,138.20 : x - Step 2: Convert to fraction form
1,259,713,082.20/1,889,569,623.30 = 441,530,138.20/x - Step 3: Cross multiply
1,259,713,082.20x = 1,889,569,623.30 × 441,530,138.20 - Step 4: Simplify right side
1,259,713,082.20x = 834,301,936,914,170,880 - Step 5: Solve for x
x = 834,301,936,914,170,880/1,259,713,082.20 - Step 6: Final answer
x = 662,295,207.30
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1.5x scale
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.