Finding the Fourth Proportional to 3,212,214.15, 4,432,979.61 and 1,761,970.71
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Solution
The fourth proportional to 3,212,214.15, 4,432,979.61 and 1,761,970.71 is: 2,431,587.64
Step by Step Solution
- Step 1: Write the proportion equation
3,212,214.15 : 4,432,979.61 = 1,761,970.71 : x - Step 2: Convert to fraction form
3,212,214.15/4,432,979.61 = 1,761,970.71/x - Step 3: Cross multiply
3,212,214.15x = 4,432,979.61 × 1,761,970.71 - Step 4: Simplify right side
3,212,214.15x = 7,810,780,230,847.22 - Step 5: Solve for x
x = 7,810,780,230,847.22/3,212,214.15 - Step 6: Final answer
x = 2,431,587.64
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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.