Finding the Fourth Proportional to 392,720.80, 588,692.40 and 192,877.60
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Solution
The fourth proportional to 392,720.80, 588,692.40 and 192,877.60 is: 289,125.45
Step by Step Solution
- Step 1: Write the proportion equation
392,720.80 : 588,692.40 = 192,877.60 : x - Step 2: Convert to fraction form
392,720.80/588,692.40 = 192,877.60/x - Step 3: Cross multiply
392,720.80x = 588,692.40 × 192,877.60 - Step 4: Simplify right side
392,720.80x = 113,545,577,250.24 - Step 5: Solve for x
x = 113,545,577,250.24/392,720.80 - Step 6: Final answer
x = 289,125.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.