Finding the Fourth Proportional to 620,394.92, 855,926.96 and 405,660.68
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Solution
The fourth proportional to 620,394.92, 855,926.96 and 405,660.68 is: 559,669.17
Step by Step Solution
- Step 1: Write the proportion equation
620,394.92 : 855,926.96 = 405,660.68 : x - Step 2: Convert to fraction form
620,394.92/855,926.96 = 405,660.68/x - Step 3: Cross multiply
620,394.92x = 855,926.96 × 405,660.68 - Step 4: Simplify right side
620,394.92x = 347,215,912,623.93 - Step 5: Solve for x
x = 347,215,912,623.93/620,394.92 - Step 6: Final answer
x = 559,669.17
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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.