Finding the Fourth Proportional to 1,939,794.70, 2,912,802.45 and 1,311,493.90
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Solution
The fourth proportional to 1,939,794.70, 2,912,802.45 and 1,311,493.90 is: 1,969,343.79
Step by Step Solution
- Step 1: Write the proportion equation
1,939,794.70 : 2,912,802.45 = 1,311,493.90 : x - Step 2: Convert to fraction form
1,939,794.70/2,912,802.45 = 1,311,493.90/x - Step 3: Cross multiply
1,939,794.70x = 2,912,802.45 × 1,311,493.90 - Step 4: Simplify right side
1,939,794.70x = 3,820,122,645,080.06 - Step 5: Solve for x
x = 3,820,122,645,080.06/1,939,794.70 - Step 6: Final answer
x = 1,969,343.79
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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.