Finding the Fourth Proportional to 681,130.14, 939,959.80 and 394,816.29
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Solution
The fourth proportional to 681,130.14, 939,959.80 and 394,816.29 is: 544,846.60
Step by Step Solution
- Step 1: Write the proportion equation
681,130.14 : 939,959.80 = 394,816.29 : x - Step 2: Convert to fraction form
681,130.14/939,959.80 = 394,816.29/x - Step 3: Cross multiply
681,130.14x = 939,959.80 × 394,816.29 - Step 4: Simplify right side
681,130.14x = 371,111,439,998.10 - Step 5: Solve for x
x = 371,111,439,998.10/681,130.14 - Step 6: Final answer
x = 544,846.60
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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.