Finding the Fourth Proportional to 769,439.94, 1,154,219.49 and 257,106.85
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Solution
The fourth proportional to 769,439.94, 1,154,219.49 and 257,106.85 is: 385,680.19
Step by Step Solution
- Step 1: Write the proportion equation
769,439.94 : 1,154,219.49 = 257,106.85 : x - Step 2: Convert to fraction form
769,439.94/1,154,219.49 = 257,106.85/x - Step 3: Cross multiply
769,439.94x = 1,154,219.49 × 257,106.85 - Step 4: Simplify right side
769,439.94x = 296,757,740,889.44 - Step 5: Solve for x
x = 296,757,740,889.44/769,439.94 - Step 6: Final answer
x = 385,680.19
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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.