Finding the Fourth Proportional to 811,812.74, 1,120,284.81 and 449,236.35
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Solution
The fourth proportional to 811,812.74, 1,120,284.81 and 449,236.35 is: 619,936.89
Step by Step Solution
- Step 1: Write the proportion equation
811,812.74 : 1,120,284.81 = 449,236.35 : x - Step 2: Convert to fraction form
811,812.74/1,120,284.81 = 449,236.35/x - Step 3: Cross multiply
811,812.74x = 1,120,284.81 × 449,236.35 - Step 4: Simplify right side
811,812.74x = 503,272,659,004.84 - Step 5: Solve for x
x = 503,272,659,004.84/811,812.74 - Step 6: Final answer
x = 619,936.89
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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.