Finding the Fourth Proportional to 769,791.81, 1,154,566.42 and 257,453.05
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Solution
The fourth proportional to 769,791.81, 1,154,566.42 and 257,453.05 is: 386,139.01
Step by Step Solution
- Step 1: Write the proportion equation
769,791.81 : 1,154,566.42 = 257,453.05 : x - Step 2: Convert to fraction form
769,791.81/1,154,566.42 = 257,453.05/x - Step 3: Cross multiply
769,791.81x = 1,154,566.42 × 257,453.05 - Step 4: Simplify right side
769,791.81x = 297,246,646,256.58 - Step 5: Solve for x
x = 297,246,646,256.58/769,791.81 - Step 6: Final answer
x = 386,139.01
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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.