Finding the Fourth Proportional to 2,188,238.92, 3,019,921.86 and 1,221,557.92
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Solution
The fourth proportional to 2,188,238.92, 3,019,921.86 and 1,221,557.92 is: 1,685,834.87
Step by Step Solution
- Step 1: Write the proportion equation
2,188,238.92 : 3,019,921.86 = 1,221,557.92 : x - Step 2: Convert to fraction form
2,188,238.92/3,019,921.86 = 1,221,557.92/x - Step 3: Cross multiply
2,188,238.92x = 3,019,921.86 × 1,221,557.92 - Step 4: Simplify right side
2,188,238.92x = 3,689,009,465,864.13 - Step 5: Solve for x
x = 3,689,009,465,864.13/2,188,238.92 - Step 6: Final answer
x = 1,685,834.87
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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.