Finding the Fourth Proportional to 9,000,425,201.92, 12,419,408,907.84 and 5,190,088,887.52
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Solution
The fourth proportional to 9,000,425,201.92, 12,419,408,907.84 and 5,190,088,887.52 is: 7,161,643,446.40
Step by Step Solution
- Step 1: Write the proportion equation
9,000,425,201.92 : 12,419,408,907.84 = 5,190,088,887.52 : x - Step 2: Convert to fraction form
9,000,425,201.92/12,419,408,907.84 = 5,190,088,887.52/x - Step 3: Cross multiply
9,000,425,201.92x = 12,419,408,907.84 × 5,190,088,887.52 - Step 4: Simplify right side
9,000,425,201.92x = 64,457,836,162,147,287,040 - Step 5: Solve for x
x = 64,457,836,162,147,287,040/9,000,425,201.92 - Step 6: Final answer
x = 7,161,643,446.40
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.