Finding the Fourth Proportional to 819,018.15, 1,228,589.42 and 279,106.62
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Solution
The fourth proportional to 819,018.15, 1,228,589.42 and 279,106.62 is: 418,681.12
Step by Step Solution
- Step 1: Write the proportion equation
819,018.15 : 1,228,589.42 = 279,106.62 : x - Step 2: Convert to fraction form
819,018.15/1,228,589.42 = 279,106.62/x - Step 3: Cross multiply
819,018.15x = 1,228,589.42 × 279,106.62 - Step 4: Simplify right side
819,018.15x = 342,907,440,383.96 - Step 5: Solve for x
x = 342,907,440,383.96/819,018.15 - Step 6: Final answer
x = 418,681.12
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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.