Finding the Fourth Proportional to 2,165,813.56, 2,988,846.35 and 1,198,959.99
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Solution
The fourth proportional to 2,165,813.56, 2,988,846.35 and 1,198,959.99 is: 1,654,577.87
Step by Step Solution
- Step 1: Write the proportion equation
2,165,813.56 : 2,988,846.35 = 1,198,959.99 : x - Step 2: Convert to fraction form
2,165,813.56/2,988,846.35 = 1,198,959.99/x - Step 3: Cross multiply
2,165,813.56x = 2,988,846.35 × 1,198,959.99 - Step 4: Simplify right side
2,165,813.56x = 3,583,507,189,907.54 - Step 5: Solve for x
x = 3,583,507,189,907.54/2,165,813.56 - Step 6: Final answer
x = 1,654,577.87
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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.