Finding the Fourth Proportional to 512,391.36, 768,596.28 and 157,408.56
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Solution
The fourth proportional to 512,391.36, 768,596.28 and 157,408.56 is: 236,115.68
Step by Step Solution
- Step 1: Write the proportion equation
512,391.36 : 768,596.28 = 157,408.56 : x - Step 2: Convert to fraction form
512,391.36/768,596.28 = 157,408.56/x - Step 3: Cross multiply
512,391.36x = 768,596.28 × 157,408.56 - Step 4: Simplify right side
512,391.36x = 120,983,633,656.16 - Step 5: Solve for x
x = 120,983,633,656.16/512,391.36 - Step 6: Final answer
x = 236,115.68
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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.