Finding the Fourth Proportional to 3,928,828.47, 5,421,490.18 and 2,209,616.84
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Solution
The fourth proportional to 3,928,828.47, 5,421,490.18 and 2,209,616.84 is: 3,049,106.39
Step by Step Solution
- Step 1: Write the proportion equation
3,928,828.47 : 5,421,490.18 = 2,209,616.84 : x - Step 2: Convert to fraction form
3,928,828.47/5,421,490.18 = 2,209,616.84/x - Step 3: Cross multiply
3,928,828.47x = 5,421,490.18 × 2,209,616.84 - Step 4: Simplify right side
3,928,828.47x = 11,979,415,999,622.63 - Step 5: Solve for x
x = 11,979,415,999,622.63/3,928,828.47 - Step 6: Final answer
x = 3,049,106.39
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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.