Finding the Fourth Proportional to 918,497.21, 1,378,372.75 and 319,452.39
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Solution
The fourth proportional to 918,497.21, 1,378,372.75 and 319,452.39 is: 479,396.63
Step by Step Solution
- Step 1: Write the proportion equation
918,497.21 : 1,378,372.75 = 319,452.39 : x - Step 2: Convert to fraction form
918,497.21/1,378,372.75 = 319,452.39/x - Step 3: Cross multiply
918,497.21x = 1,378,372.75 × 319,452.39 - Step 4: Simplify right side
918,497.21x = 440,324,468,499.74 - Step 5: Solve for x
x = 440,324,468,499.74/918,497.21 - Step 6: Final answer
x = 479,396.63
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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.