Finding the Fourth Proportional to 1,212,920.70, 1,819,381.05 and 740,528.70
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Solution
The fourth proportional to 1,212,920.70, 1,819,381.05 and 740,528.70 is: 1,110,793.05
Step by Step Solution
- Step 1: Write the proportion equation
1,212,920.70 : 1,819,381.05 = 740,528.70 : x - Step 2: Convert to fraction form
1,212,920.70/1,819,381.05 = 740,528.70/x - Step 3: Cross multiply
1,212,920.70x = 1,819,381.05 × 740,528.70 - Step 4: Simplify right side
1,212,920.70x = 1,347,303,883,761.14 - Step 5: Solve for x
x = 1,347,303,883,761.14/1,212,920.70 - Step 6: Final answer
x = 1,110,793.05
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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.