Finding the Fourth Proportional to 1,987,764.57, 2,743,040.34 and 1,214,688.09
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Solution
The fourth proportional to 1,987,764.57, 2,743,040.34 and 1,214,688.09 is: 1,676,223.88
Step by Step Solution
- Step 1: Write the proportion equation
1,987,764.57 : 2,743,040.34 = 1,214,688.09 : x - Step 2: Convert to fraction form
1,987,764.57/2,743,040.34 = 1,214,688.09/x - Step 3: Cross multiply
1,987,764.57x = 2,743,040.34 × 1,214,688.09 - Step 4: Simplify right side
1,987,764.57x = 3,331,938,431,387.55 - Step 5: Solve for x
x = 3,331,938,431,387.55/1,987,764.57 - Step 6: Final answer
x = 1,676,223.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.