Finding the Fourth Proportional to 512,435.20, 768,652.80 and 325,811.20
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Solution
The fourth proportional to 512,435.20, 768,652.80 and 325,811.20 is: 488,716.80
Step by Step Solution
- Step 1: Write the proportion equation
512,435.20 : 768,652.80 = 325,811.20 : x - Step 2: Convert to fraction form
512,435.20/768,652.80 = 325,811.20/x - Step 3: Cross multiply
512,435.20x = 768,652.80 × 325,811.20 - Step 4: Simplify right side
512,435.20x = 250,435,691,151.36 - Step 5: Solve for x
x = 250,435,691,151.36/512,435.20 - Step 6: Final answer
x = 488,716.80
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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.