Finding the Fourth Proportional to 2,132,420.70, 2,942,736.30 and 1,214,649.49
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Solution
The fourth proportional to 2,132,420.70, 2,942,736.30 and 1,214,649.49 is: 1,676,213.87
Step by Step Solution
- Step 1: Write the proportion equation
2,132,420.70 : 2,942,736.30 = 1,214,649.49 : x - Step 2: Convert to fraction form
2,132,420.70/2,942,736.30 = 1,214,649.49/x - Step 3: Cross multiply
2,132,420.70x = 2,942,736.30 × 1,214,649.49 - Step 4: Simplify right side
2,132,420.70x = 3,574,393,156,392.95 - Step 5: Solve for x
x = 3,574,393,156,392.95/2,132,420.70 - Step 6: Final answer
x = 1,676,213.87
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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.