Finding the Fourth Proportional to 1,891,176,359.20, 2,836,764,538.80 and 664,344,810.70
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Solution
The fourth proportional to 1,891,176,359.20, 2,836,764,538.80 and 664,344,810.70 is: 996,517,216.05
Step by Step Solution
- Step 1: Write the proportion equation
1,891,176,359.20 : 2,836,764,538.80 = 664,344,810.70 : x - Step 2: Convert to fraction form
1,891,176,359.20/2,836,764,538.80 = 664,344,810.70/x - Step 3: Cross multiply
1,891,176,359.20x = 2,836,764,538.80 × 664,344,810.70 - Step 4: Simplify right side
1,891,176,359.20x = 1,884,589,800,529,559,040 - Step 5: Solve for x
x = 1,884,589,800,529,559,040/1,891,176,359.20 - Step 6: Final answer
x = 996,517,216.05
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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.