Finding the Fourth Proportional to 811,955.80, 1,217,933.70 and 212,915.80
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Solution
The fourth proportional to 811,955.80, 1,217,933.70 and 212,915.80 is: 319,373.70
Step by Step Solution
- Step 1: Write the proportion equation
811,955.80 : 1,217,933.70 = 212,915.80 : x - Step 2: Convert to fraction form
811,955.80/1,217,933.70 = 212,915.80/x - Step 3: Cross multiply
811,955.80x = 1,217,933.70 × 212,915.80 - Step 4: Simplify right side
811,955.80x = 259,317,328,082.46 - Step 5: Solve for x
x = 259,317,328,082.46/811,955.80 - Step 6: Final answer
x = 319,373.70
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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.