Finding the Fourth Proportional to 1,489,889.70, 2,234,834.55 and 780,135.30
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Solution
The fourth proportional to 1,489,889.70, 2,234,834.55 and 780,135.30 is: 1,170,202.95
Step by Step Solution
- Step 1: Write the proportion equation
1,489,889.70 : 2,234,834.55 = 780,135.30 : x - Step 2: Convert to fraction form
1,489,889.70/2,234,834.55 = 780,135.30/x - Step 3: Cross multiply
1,489,889.70x = 2,234,834.55 × 780,135.30 - Step 4: Simplify right side
1,489,889.70x = 1,743,473,322,114.62 - Step 5: Solve for x
x = 1,743,473,322,114.62/1,489,889.70 - Step 6: Final answer
x = 1,170,202.95
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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.