Finding the Fourth Proportional to 1,920,104.70, 2,880,157.05 and 1,213,266.30
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Solution
The fourth proportional to 1,920,104.70, 2,880,157.05 and 1,213,266.30 is: 1,819,899.45
Step by Step Solution
- Step 1: Write the proportion equation
1,920,104.70 : 2,880,157.05 = 1,213,266.30 : x - Step 2: Convert to fraction form
1,920,104.70/2,880,157.05 = 1,213,266.30/x - Step 3: Cross multiply
1,920,104.70x = 2,880,157.05 × 1,213,266.30 - Step 4: Simplify right side
1,920,104.70x = 3,494,397,487,472.42 - Step 5: Solve for x
x = 3,494,397,487,472.42/1,920,104.70 - Step 6: Final answer
x = 1,819,899.45
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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.