Finding the Fourth Proportional to 823,920.79, 1,235,429.65 and 255,143.99
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Solution
The fourth proportional to 823,920.79, 1,235,429.65 and 255,143.99 is: 382,576.16
Step by Step Solution
- Step 1: Write the proportion equation
823,920.79 : 1,235,429.65 = 255,143.99 : x - Step 2: Convert to fraction form
823,920.79/1,235,429.65 = 255,143.99/x - Step 3: Cross multiply
823,920.79x = 1,235,429.65 × 255,143.99 - Step 4: Simplify right side
823,920.79x = 315,212,450,265.30 - Step 5: Solve for x
x = 315,212,450,265.30/823,920.79 - Step 6: Final answer
x = 382,576.16
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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.