Finding the Fourth Proportional to 1,511,428.18, 2,270,291.56 and 1,275,232.18
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Solution
The fourth proportional to 1,511,428.18, 2,270,291.56 and 1,275,232.18 is: 1,915,505.41
Step by Step Solution
- Step 1: Write the proportion equation
1,511,428.18 : 2,270,291.56 = 1,275,232.18 : x - Step 2: Convert to fraction form
1,511,428.18/2,270,291.56 = 1,275,232.18/x - Step 3: Cross multiply
1,511,428.18x = 2,270,291.56 × 1,275,232.18 - Step 4: Simplify right side
1,511,428.18x = 2,895,148,855,294.40 - Step 5: Solve for x
x = 2,895,148,855,294.40/1,511,428.18 - Step 6: Final answer
x = 1,915,505.41
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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.