Finding the Fourth Proportional to 866,170.09, 1,299,240.81 and 258,959.79
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Solution
The fourth proportional to 866,170.09, 1,299,240.81 and 258,959.79 is: 388,435.40
Step by Step Solution
- Step 1: Write the proportion equation
866,170.09 : 1,299,240.81 = 258,959.79 : x - Step 2: Convert to fraction form
866,170.09/1,299,240.81 = 258,959.79/x - Step 3: Cross multiply
866,170.09x = 1,299,240.81 × 258,959.79 - Step 4: Simplify right side
866,170.09x = 336,451,122,477.41 - Step 5: Solve for x
x = 336,451,122,477.41/866,170.09 - Step 6: Final answer
x = 388,435.40
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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.