Finding the Fourth Proportional to 393,511.20, 589,378.68 and 275,708.40
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Solution
The fourth proportional to 393,511.20, 589,378.68 and 275,708.40 is: 412,940.35
Step by Step Solution
- Step 1: Write the proportion equation
393,511.20 : 589,378.68 = 275,708.40 : x - Step 2: Convert to fraction form
393,511.20/589,378.68 = 275,708.40/x - Step 3: Cross multiply
393,511.20x = 589,378.68 × 275,708.40 - Step 4: Simplify right side
393,511.20x = 162,496,652,856.91 - Step 5: Solve for x
x = 162,496,652,856.91/393,511.20 - Step 6: Final answer
x = 412,940.35
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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.