Finding the Fourth Proportional to 819,353.70, 1,229,030.58 and 258,431.94
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Solution
The fourth proportional to 819,353.70, 1,229,030.58 and 258,431.94 is: 387,647.92
Step by Step Solution
- Step 1: Write the proportion equation
819,353.70 : 1,229,030.58 = 258,431.94 : x - Step 2: Convert to fraction form
819,353.70/1,229,030.58 = 258,431.94/x - Step 3: Cross multiply
819,353.70x = 1,229,030.58 × 258,431.94 - Step 4: Simplify right side
819,353.70x = 317,620,757,108.73 - Step 5: Solve for x
x = 317,620,757,108.73/819,353.70 - Step 6: Final answer
x = 387,647.92
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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.