Finding the Fourth Proportional to 1,383,615.80, 2,075,423.70 and 1,330,471.70
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Solution
The fourth proportional to 1,383,615.80, 2,075,423.70 and 1,330,471.70 is: 1,995,707.55
Step by Step Solution
- Step 1: Write the proportion equation
1,383,615.80 : 2,075,423.70 = 1,330,471.70 : x - Step 2: Convert to fraction form
1,383,615.80/2,075,423.70 = 1,330,471.70/x - Step 3: Cross multiply
1,383,615.80x = 2,075,423.70 × 1,330,471.70 - Step 4: Simplify right side
1,383,615.80x = 2,761,292,498,359.29 - Step 5: Solve for x
x = 2,761,292,498,359.29/1,383,615.80 - Step 6: Final answer
x = 1,995,707.55
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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.