Finding the Fourth Proportional to 3,999,120.76, 5,518,790.26 and 2,188,284.76
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Solution
The fourth proportional to 3,999,120.76, 5,518,790.26 and 2,188,284.76 is: 3,019,834.94
Step by Step Solution
- Step 1: Write the proportion equation
3,999,120.76 : 5,518,790.26 = 2,188,284.76 : x - Step 2: Convert to fraction form
3,999,120.76/5,518,790.26 = 2,188,284.76/x - Step 3: Cross multiply
3,999,120.76x = 5,518,790.26 × 2,188,284.76 - Step 4: Simplify right side
3,999,120.76x = 12,076,684,619,594.44 - Step 5: Solve for x
x = 12,076,684,619,594.44/3,999,120.76 - Step 6: Final answer
x = 3,019,834.94
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1.5x scale
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.