Finding the Fourth Proportional to 1,819,438.12, 2,726,943.18 and 1,287,112.60
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Solution
The fourth proportional to 1,819,438.12, 2,726,943.18 and 1,287,112.60 is: 1,929,102.67
Step by Step Solution
- Step 1: Write the proportion equation
1,819,438.12 : 2,726,943.18 = 1,287,112.60 : x - Step 2: Convert to fraction form
1,819,438.12/2,726,943.18 = 1,287,112.60/x - Step 3: Cross multiply
1,819,438.12x = 2,726,943.18 × 1,287,112.60 - Step 4: Simplify right side
1,819,438.12x = 3,509,882,926,462.07 - Step 5: Solve for x
x = 3,509,882,926,462.07/1,819,438.12 - Step 6: Final answer
x = 1,929,102.67
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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.