Finding the Fourth Proportional to 620,388.92, 855,918.68 and 405,654.68
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Solution
The fourth proportional to 620,388.92, 855,918.68 and 405,654.68 is: 559,660.90
Step by Step Solution
- Step 1: Write the proportion equation
620,388.92 : 855,918.68 = 405,654.68 : x - Step 2: Convert to fraction form
620,388.92/855,918.68 = 405,654.68/x - Step 3: Cross multiply
620,388.92x = 855,918.68 × 405,654.68 - Step 4: Simplify right side
620,388.92x = 347,207,418,241.42 - Step 5: Solve for x
x = 347,207,418,241.42/620,388.92 - Step 6: Final answer
x = 559,660.90
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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.