Finding the Fourth Proportional to 821,609.41, 1,133,626.60 and 477,240.75
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Solution
The fourth proportional to 821,609.41, 1,133,626.60 and 477,240.75 is: 658,479.32
Step by Step Solution
- Step 1: Write the proportion equation
821,609.41 : 1,133,626.60 = 477,240.75 : x - Step 2: Convert to fraction form
821,609.41/1,133,626.60 = 477,240.75/x - Step 3: Cross multiply
821,609.41x = 1,133,626.60 × 477,240.75 - Step 4: Simplify right side
821,609.41x = 541,012,808,803.95 - Step 5: Solve for x
x = 541,012,808,803.95/821,609.41 - Step 6: Final answer
x = 658,479.32
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.