Finding the Fourth Proportional to 511,785.77, 768,343.86 and 393,540.12
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Solution
The fourth proportional to 511,785.77, 768,343.86 and 393,540.12 is: 590,821.70
Step by Step Solution
- Step 1: Write the proportion equation
511,785.77 : 768,343.86 = 393,540.12 : x - Step 2: Convert to fraction form
511,785.77/768,343.86 = 393,540.12/x - Step 3: Cross multiply
511,785.77x = 768,343.86 × 393,540.12 - Step 4: Simplify right side
511,785.77x = 302,374,134,865.66 - Step 5: Solve for x
x = 302,374,134,865.66/511,785.77 - Step 6: Final answer
x = 590,821.70
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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.