Finding the Fourth Proportional to 811,868.85, 1,120,351.37 and 449,307.99
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Solution
The fourth proportional to 811,868.85, 1,120,351.37 and 449,307.99 is: 620,029.73
Step by Step Solution
- Step 1: Write the proportion equation
811,868.85 : 1,120,351.37 = 449,307.99 : x - Step 2: Convert to fraction form
811,868.85/1,120,351.37 = 449,307.99/x - Step 3: Cross multiply
811,868.85x = 1,120,351.37 × 449,307.99 - Step 4: Simplify right side
811,868.85x = 503,382,819,901.91 - Step 5: Solve for x
x = 503,382,819,901.91/811,868.85 - Step 6: Final answer
x = 620,029.73
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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.