Finding the Fourth Proportional to 556,631.70, 768,224.08 and 311,709.70
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Solution
The fourth proportional to 556,631.70, 768,224.08 and 311,709.70 is: 430,199.90
Step by Step Solution
- Step 1: Write the proportion equation
556,631.70 : 768,224.08 = 311,709.70 : x - Step 2: Convert to fraction form
556,631.70/768,224.08 = 311,709.70/x - Step 3: Cross multiply
556,631.70x = 768,224.08 × 311,709.70 - Step 4: Simplify right side
556,631.70x = 239,462,898,859.49 - Step 5: Solve for x
x = 239,462,898,859.49/556,631.70 - Step 6: Final answer
x = 430,199.90
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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.