Finding the Fourth Proportional to 680,789.43, 939,615.39 and 394,309.44
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Solution
The fourth proportional to 680,789.43, 939,615.39 and 394,309.44 is: 544,219.99
Step by Step Solution
- Step 1: Write the proportion equation
680,789.43 : 939,615.39 = 394,309.44 : x - Step 2: Convert to fraction form
680,789.43/939,615.39 = 394,309.44/x - Step 3: Cross multiply
680,789.43x = 939,615.39 × 394,309.44 - Step 4: Simplify right side
680,789.43x = 370,499,218,246.28 - Step 5: Solve for x
x = 370,499,218,246.28/680,789.43 - Step 6: Final answer
x = 544,219.99
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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.