Finding the Fourth Proportional to 512,865.60, 769,440.60 and 213,487.20
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Solution
The fourth proportional to 512,865.60, 769,440.60 and 213,487.20 is: 320,289.99
Step by Step Solution
- Step 1: Write the proportion equation
512,865.60 : 769,440.60 = 213,487.20 : x - Step 2: Convert to fraction form
512,865.60/769,440.60 = 213,487.20/x - Step 3: Cross multiply
512,865.60x = 769,440.60 × 213,487.20 - Step 4: Simplify right side
512,865.60x = 164,265,719,260.32 - Step 5: Solve for x
x = 164,265,719,260.32/512,865.60 - Step 6: Final answer
x = 320,289.99
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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.