Finding the Fourth Proportional to 556,638.05, 768,232.83 and 311,716.05
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Solution
The fourth proportional to 556,638.05, 768,232.83 and 311,716.05 is: 430,208.65
Step by Step Solution
- Step 1: Write the proportion equation
556,638.05 : 768,232.83 = 311,716.05 : x - Step 2: Convert to fraction form
556,638.05/768,232.83 = 311,716.05/x - Step 3: Cross multiply
556,638.05x = 768,232.83 × 311,716.05 - Step 4: Simplify right side
556,638.05x = 239,470,503,247.92 - Step 5: Solve for x
x = 239,470,503,247.92/556,638.05 - Step 6: Final answer
x = 430,208.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.