Finding the Fourth Proportional to 805,692.19, 1,208,520.73 and 378,991.50
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Solution
The fourth proportional to 805,692.19, 1,208,520.73 and 378,991.50 is: 568,478.99
Step by Step Solution
- Step 1: Write the proportion equation
805,692.19 : 1,208,520.73 = 378,991.50 : x - Step 2: Convert to fraction form
805,692.19/1,208,520.73 = 378,991.50/x - Step 3: Cross multiply
805,692.19x = 1,208,520.73 × 378,991.50 - Step 4: Simplify right side
805,692.19x = 458,019,086,983.51 - Step 5: Solve for x
x = 458,019,086,983.51/805,692.19 - Step 6: Final answer
x = 568,478.99
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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.