Finding the Fourth Proportional to 4,128,764,979.20, 5,697,693,159.36 and 2,274,468,915.20
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Solution
The fourth proportional to 4,128,764,979.20, 5,697,693,159.36 and 2,274,468,915.20 is: 3,138,765,719.19
Step by Step Solution
- Step 1: Write the proportion equation
4,128,764,979.20 : 5,697,693,159.36 = 2,274,468,915.20 : x - Step 2: Convert to fraction form
4,128,764,979.20/5,697,693,159.36 = 2,274,468,915.20/x - Step 3: Cross multiply
4,128,764,979.20x = 5,697,693,159.36 × 2,274,468,915.20 - Step 4: Simplify right side
4,128,764,979.20x = 12,959,225,979,311,998,976 - Step 5: Solve for x
x = 12,959,225,979,311,998,976/4,128,764,979.20 - Step 6: Final answer
x = 3,138,765,719.19
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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.