Finding the Fourth Proportional to 780,439.96, 1,170,660.21 and 219,474.46
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Solution
The fourth proportional to 780,439.96, 1,170,660.21 and 219,474.46 is: 329,211.77
Step by Step Solution
- Step 1: Write the proportion equation
780,439.96 : 1,170,660.21 = 219,474.46 : x - Step 2: Convert to fraction form
780,439.96/1,170,660.21 = 219,474.46/x - Step 3: Cross multiply
780,439.96x = 1,170,660.21 × 219,474.46 - Step 4: Simplify right side
780,439.96x = 256,930,017,433.24 - Step 5: Solve for x
x = 256,930,017,433.24/780,439.96 - Step 6: Final answer
x = 329,211.77
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1.5x scale
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.