Finding the Fourth Proportional to 621,344.63, 857,355.56 and 349,396.31
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Solution
The fourth proportional to 621,344.63, 857,355.56 and 349,396.31 is: 482,110.66
Step by Step Solution
- Step 1: Write the proportion equation
621,344.63 : 857,355.56 = 349,396.31 : x - Step 2: Convert to fraction form
621,344.63/857,355.56 = 349,396.31/x - Step 3: Cross multiply
621,344.63x = 857,355.56 × 349,396.31 - Step 4: Simplify right side
621,344.63x = 299,556,869,299.99 - Step 5: Solve for x
x = 299,556,869,299.99/621,344.63 - Step 6: Final answer
x = 482,110.66
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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.