Finding the Fourth Proportional to 1,988,370.42, 2,979,775.18 and 1,075,582.23
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Solution
The fourth proportional to 1,988,370.42, 2,979,775.18 and 1,075,582.23 is: 1,611,869.30
Step by Step Solution
- Step 1: Write the proportion equation
1,988,370.42 : 2,979,775.18 = 1,075,582.23 : x - Step 2: Convert to fraction form
1,988,370.42/2,979,775.18 = 1,075,582.23/x - Step 3: Cross multiply
1,988,370.42x = 2,979,775.18 × 1,075,582.23 - Step 4: Simplify right side
1,988,370.42x = 3,204,993,230,314.10 - Step 5: Solve for x
x = 3,204,993,230,314.10/1,988,370.42 - Step 6: Final answer
x = 1,611,869.30
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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.