Finding the Fourth Proportional to 403,359.67, 555,435.79 and 394,408.90
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Solution
The fourth proportional to 403,359.67, 555,435.79 and 394,408.90 is: 543,110.37
Step by Step Solution
- Step 1: Write the proportion equation
403,359.67 : 555,435.79 = 394,408.90 : x - Step 2: Convert to fraction form
403,359.67/555,435.79 = 394,408.90/x - Step 3: Cross multiply
403,359.67x = 555,435.79 × 394,408.90 - Step 4: Simplify right side
403,359.67x = 219,068,818,954.53 - Step 5: Solve for x
x = 219,068,818,954.53/403,359.67 - Step 6: Final answer
x = 543,110.37
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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.