Finding the Fourth Proportional to 539,378.42, 744,622.09 and 394,020.99
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Solution
The fourth proportional to 539,378.42, 744,622.09 and 394,020.99 is: 543,953.41
Step by Step Solution
- Step 1: Write the proportion equation
539,378.42 : 744,622.09 = 394,020.99 : x - Step 2: Convert to fraction form
539,378.42/744,622.09 = 394,020.99/x - Step 3: Cross multiply
539,378.42x = 744,622.09 × 394,020.99 - Step 4: Simplify right side
539,378.42x = 293,396,733,077.67 - Step 5: Solve for x
x = 293,396,733,077.67/539,378.42 - Step 6: Final answer
x = 543,953.41
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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.