Finding the Fourth Proportional to 569,728.68, 786,239.28 and 311,629.88
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Solution
The fourth proportional to 569,728.68, 786,239.28 and 311,629.88 is: 430,056.72
Step by Step Solution
- Step 1: Write the proportion equation
569,728.68 : 786,239.28 = 311,629.88 : x - Step 2: Convert to fraction form
569,728.68/786,239.28 = 311,629.88/x - Step 3: Cross multiply
569,728.68x = 786,239.28 × 311,629.88 - Step 4: Simplify right side
569,728.68x = 245,015,648,546.49 - Step 5: Solve for x
x = 245,015,648,546.49/569,728.68 - Step 6: Final answer
x = 430,056.72
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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.