Finding the Fourth Proportional to 3,886,385.20, 5,827,828.20 and 1,489,433.20
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Solution
The fourth proportional to 3,886,385.20, 5,827,828.20 and 1,489,433.20 is: 2,233,479.28
Step by Step Solution
- Step 1: Write the proportion equation
3,886,385.20 : 5,827,828.20 = 1,489,433.20 : x - Step 2: Convert to fraction form
3,886,385.20/5,827,828.20 = 1,489,433.20/x - Step 3: Cross multiply
3,886,385.20x = 5,827,828.20 × 1,489,433.20 - Step 4: Simplify right side
3,886,385.20x = 8,680,160,804,976.24 - Step 5: Solve for x
x = 8,680,160,804,976.24/3,886,385.20 - Step 6: Final answer
x = 2,233,479.28
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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.