Finding the Fourth Proportional to 878,286.42, 1,211,978.97 and 491,133.75
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Solution
The fourth proportional to 878,286.42, 1,211,978.97 and 491,133.75 is: 677,733.10
Step by Step Solution
- Step 1: Write the proportion equation
878,286.42 : 1,211,978.97 = 491,133.75 : x - Step 2: Convert to fraction form
878,286.42/1,211,978.97 = 491,133.75/x - Step 3: Cross multiply
878,286.42x = 1,211,978.97 × 491,133.75 - Step 4: Simplify right side
878,286.42x = 595,243,776,457.24 - Step 5: Solve for x
x = 595,243,776,457.24/878,286.42 - Step 6: Final answer
x = 677,733.10
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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.