Finding the Fourth Proportional to 386,692.44, 579,995.69 and 120,430.68
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Solution
The fourth proportional to 386,692.44, 579,995.69 and 120,430.68 is: 180,632.64
Step by Step Solution
- Step 1: Write the proportion equation
386,692.44 : 579,995.69 = 120,430.68 : x - Step 2: Convert to fraction form
386,692.44/579,995.69 = 120,430.68/x - Step 3: Cross multiply
386,692.44x = 579,995.69 × 120,430.68 - Step 4: Simplify right side
386,692.44x = 69,849,274,741.62 - Step 5: Solve for x
x = 69,849,274,741.62/386,692.44 - Step 6: Final answer
x = 180,632.64
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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.