Finding the Fourth Proportional to 1,383,849,974.21, 1,909,711,730.61 and 781,147,458.99
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Solution
The fourth proportional to 1,383,849,974.21, 1,909,711,730.61 and 781,147,458.99 is: 1,077,982,796.96
Step by Step Solution
- Step 1: Write the proportion equation
1,383,849,974.21 : 1,909,711,730.61 = 781,147,458.99 : x - Step 2: Convert to fraction form
1,383,849,974.21/1,909,711,730.61 = 781,147,458.99/x - Step 3: Cross multiply
1,383,849,974.21x = 1,909,711,730.61 × 781,147,458.99 - Step 4: Simplify right side
1,383,849,974.21x = 1,491,766,465,769,396,736 - Step 5: Solve for x
x = 1,491,766,465,769,396,736/1,383,849,974.21 - Step 6: Final answer
x = 1,077,982,796.96
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.