Finding the Fourth Proportional to 811,981.28, 1,120,525.84 and 449,405.84
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Solution
The fourth proportional to 811,981.28, 1,120,525.84 and 449,405.84 is: 620,175.45
Step by Step Solution
- Step 1: Write the proportion equation
811,981.28 : 1,120,525.84 = 449,405.84 : x - Step 2: Convert to fraction form
811,981.28/1,120,525.84 = 449,405.84/x - Step 3: Cross multiply
811,981.28x = 1,120,525.84 × 449,405.84 - Step 4: Simplify right side
811,981.28x = 503,570,856,366.91 - Step 5: Solve for x
x = 503,570,856,366.91/811,981.28 - Step 6: Final answer
x = 620,175.45
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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.