Finding the Fourth Proportional to 1,991,075.68, 2,747,687.20 and 1,085,657.68
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Solution
The fourth proportional to 1,991,075.68, 2,747,687.20 and 1,085,657.68 is: 1,498,209.10
Step by Step Solution
- Step 1: Write the proportion equation
1,991,075.68 : 2,747,687.20 = 1,085,657.68 : x - Step 2: Convert to fraction form
1,991,075.68/2,747,687.20 = 1,085,657.68/x - Step 3: Cross multiply
1,991,075.68x = 2,747,687.20 × 1,085,657.68 - Step 4: Simplify right side
1,991,075.68x = 2,983,047,710,917.70 - Step 5: Solve for x
x = 2,983,047,710,917.70/1,991,075.68 - Step 6: Final answer
x = 1,498,209.10
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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.