Finding the Fourth Proportional to 786,392.50, 1,179,288.99 and 280,859.08
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Solution
The fourth proportional to 786,392.50, 1,179,288.99 and 280,859.08 is: 421,181.56
Step by Step Solution
- Step 1: Write the proportion equation
786,392.50 : 1,179,288.99 = 280,859.08 : x - Step 2: Convert to fraction form
786,392.50/1,179,288.99 = 280,859.08/x - Step 3: Cross multiply
786,392.50x = 1,179,288.99 × 280,859.08 - Step 4: Simplify right side
786,392.50x = 331,214,020,785.53 - Step 5: Solve for x
x = 331,214,020,785.53/786,392.50 - Step 6: Final answer
x = 421,181.56
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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.