Finding the Fourth Proportional to 929,408.19, 1,394,178.92 and 389,120.78
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Solution
The fourth proportional to 929,408.19, 1,394,178.92 and 389,120.78 is: 583,709.06
Step by Step Solution
- Step 1: Write the proportion equation
929,408.19 : 1,394,178.92 = 389,120.78 : x - Step 2: Convert to fraction form
929,408.19/1,394,178.92 = 389,120.78/x - Step 3: Cross multiply
929,408.19x = 1,394,178.92 × 389,120.78 - Step 4: Simplify right side
929,408.19x = 542,503,985,608.37 - Step 5: Solve for x
x = 542,503,985,608.37/929,408.19 - Step 6: Final answer
x = 583,709.06
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.