Finding the Fourth Proportional to 1,645,386.12, 2,270,608.74 and 920,227.68
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Solution
The fourth proportional to 1,645,386.12, 2,270,608.74 and 920,227.68 is: 1,269,900.72
Step by Step Solution
- Step 1: Write the proportion equation
1,645,386.12 : 2,270,608.74 = 920,227.68 : x - Step 2: Convert to fraction form
1,645,386.12/2,270,608.74 = 920,227.68/x - Step 3: Cross multiply
1,645,386.12x = 2,270,608.74 × 920,227.68 - Step 4: Simplify right side
1,645,386.12x = 2,089,477,012,997.92 - Step 5: Solve for x
x = 2,089,477,012,997.92/1,645,386.12 - Step 6: Final answer
x = 1,269,900.72
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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.