Finding the Fourth Proportional to 2,165,628.12, 2,988,530.64 and 1,198,737.69
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Solution
The fourth proportional to 2,165,628.12, 2,988,530.64 and 1,198,737.69 is: 1,654,237.99
Step by Step Solution
- Step 1: Write the proportion equation
2,165,628.12 : 2,988,530.64 = 1,198,737.69 : x - Step 2: Convert to fraction form
2,165,628.12/2,988,530.64 = 1,198,737.69/x - Step 3: Cross multiply
2,165,628.12x = 2,988,530.64 × 1,198,737.69 - Step 4: Simplify right side
2,165,628.12x = 3,582,464,315,887.82 - Step 5: Solve for x
x = 3,582,464,315,887.82/2,165,628.12 - Step 6: Final answer
x = 1,654,237.99
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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.