Finding the Fourth Proportional to 512,209.20, 768,313.80 and 477,217.20
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Solution
The fourth proportional to 512,209.20, 768,313.80 and 477,217.20 is: 715,825.80
Step by Step Solution
- Step 1: Write the proportion equation
512,209.20 : 768,313.80 = 477,217.20 : x - Step 2: Convert to fraction form
512,209.20/768,313.80 = 477,217.20/x - Step 3: Cross multiply
512,209.20x = 768,313.80 × 477,217.20 - Step 4: Simplify right side
512,209.20x = 366,652,560,357.36 - Step 5: Solve for x
x = 366,652,560,357.36/512,209.20 - Step 6: Final answer
x = 715,825.80
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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.