Finding the Fourth Proportional to 2,378,992.20, 3,282,921.24 and 1,291,240.40
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Solution
The fourth proportional to 2,378,992.20, 3,282,921.24 and 1,291,240.40 is: 1,781,863.99
Step by Step Solution
- Step 1: Write the proportion equation
2,378,992.20 : 3,282,921.24 = 1,291,240.40 : x - Step 2: Convert to fraction form
2,378,992.20/3,282,921.24 = 1,291,240.40/x - Step 3: Cross multiply
2,378,992.20x = 3,282,921.24 × 1,291,240.40 - Step 4: Simplify right side
2,378,992.20x = 4,239,040,535,106.10 - Step 5: Solve for x
x = 4,239,040,535,106.10/2,378,992.20 - Step 6: Final answer
x = 1,781,863.99
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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.