Finding the Fourth Proportional to 681,157.56, 939,853.62 and 394,660.20
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Solution
The fourth proportional to 681,157.56, 939,853.62 and 394,660.20 is: 544,547.75
Step by Step Solution
- Step 1: Write the proportion equation
681,157.56 : 939,853.62 = 394,660.20 : x - Step 2: Convert to fraction form
681,157.56/939,853.62 = 394,660.20/x - Step 3: Cross multiply
681,157.56x = 939,853.62 × 394,660.20 - Step 4: Simplify right side
681,157.56x = 370,922,817,639.92 - Step 5: Solve for x
x = 370,922,817,639.92/681,157.56 - Step 6: Final answer
x = 544,547.75
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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.