Finding the Fourth Proportional to 636,464.88, 878,102.94 and 394,660.44
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Solution
The fourth proportional to 636,464.88, 878,102.94 and 394,660.44 is: 544,495.86
Step by Step Solution
- Step 1: Write the proportion equation
636,464.88 : 878,102.94 = 394,660.44 : x - Step 2: Convert to fraction form
636,464.88/878,102.94 = 394,660.44/x - Step 3: Cross multiply
636,464.88x = 878,102.94 × 394,660.44 - Step 4: Simplify right side
636,464.88x = 346,552,492,665.69 - Step 5: Solve for x
x = 346,552,492,665.69/636,464.88 - Step 6: Final answer
x = 544,495.86
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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.