Finding the Fourth Proportional to 2,121,533.78, 3,177,235.37 and 1,221,082.79
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Solution
The fourth proportional to 2,121,533.78, 3,177,235.37 and 1,221,082.79 is: 1,828,708.77
Step by Step Solution
- Step 1: Write the proportion equation
2,121,533.78 : 3,177,235.37 = 1,221,082.79 : x - Step 2: Convert to fraction form
2,121,533.78/3,177,235.37 = 1,221,082.79/x - Step 3: Cross multiply
2,121,533.78x = 3,177,235.37 × 1,221,082.79 - Step 4: Simplify right side
2,121,533.78x = 3,879,667,414,200.11 - Step 5: Solve for x
x = 3,879,667,414,200.11/2,121,533.78 - Step 6: Final answer
x = 1,828,708.77
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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.