Finding the Fourth Proportional to 3,971,340.12, 5,480,276.62 and 2,205,128.44
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Solution
The fourth proportional to 3,971,340.12, 5,480,276.62 and 2,205,128.44 is: 3,042,981.32
Step by Step Solution
- Step 1: Write the proportion equation
3,971,340.12 : 5,480,276.62 = 2,205,128.44 : x - Step 2: Convert to fraction form
3,971,340.12/5,480,276.62 = 2,205,128.44/x - Step 3: Cross multiply
3,971,340.12x = 5,480,276.62 × 2,205,128.44 - Step 4: Simplify right side
3,971,340.12x = 12,084,713,795,402.05 - Step 5: Solve for x
x = 12,084,713,795,402.05/3,971,340.12 - Step 6: Final answer
x = 3,042,981.32
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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.