Finding the Fourth Proportional to 681,140.08, 939,972.96 and 394,826.08
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Solution
The fourth proportional to 681,140.08, 939,972.96 and 394,826.08 is: 544,859.79
Step by Step Solution
- Step 1: Write the proportion equation
681,140.08 : 939,972.96 = 394,826.08 : x - Step 2: Convert to fraction form
681,140.08/939,972.96 = 394,826.08/x - Step 3: Cross multiply
681,140.08x = 939,972.96 × 394,826.08 - Step 4: Simplify right side
681,140.08x = 371,125,839,102.80 - Step 5: Solve for x
x = 371,125,839,102.80/681,140.08 - Step 6: Final answer
x = 544,859.79
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1.5x scale
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.