Finding the Fourth Proportional to 2,910,720,119.20, 4,366,080,178.80 and 840,509,418.40
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Solution
The fourth proportional to 2,910,720,119.20, 4,366,080,178.80 and 840,509,418.40 is: 1,260,764,127.60
Step by Step Solution
- Step 1: Write the proportion equation
2,910,720,119.20 : 4,366,080,178.80 = 840,509,418.40 : x - Step 2: Convert to fraction form
2,910,720,119.20/4,366,080,178.80 = 840,509,418.40/x - Step 3: Cross multiply
2,910,720,119.20x = 4,366,080,178.80 × 840,509,418.40 - Step 4: Simplify right side
2,910,720,119.20x = 3,669,731,511,770,956,288 - Step 5: Solve for x
x = 3,669,731,511,770,956,288/2,910,720,119.20 - Step 6: Final answer
x = 1,260,764,127.60
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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.