Finding the Fourth Proportional to 642,692.19, 962,986.44 and 390,050.12
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Solution
The fourth proportional to 642,692.19, 962,986.44 and 390,050.12 is: 584,436.81
Step by Step Solution
- Step 1: Write the proportion equation
642,692.19 : 962,986.44 = 390,050.12 : x - Step 2: Convert to fraction form
642,692.19/962,986.44 = 390,050.12/x - Step 3: Cross multiply
642,692.19x = 962,986.44 × 390,050.12 - Step 4: Simplify right side
642,692.19x = 375,612,971,665.44 - Step 5: Solve for x
x = 375,612,971,665.44/642,692.19 - Step 6: Final answer
x = 584,436.81
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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.