Finding the Fourth Proportional to 1,421,474.12, 1,961,982.84 and 809,987.33
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Solution
The fourth proportional to 1,421,474.12, 1,961,982.84 and 809,987.33 is: 1,117,981.12
Step by Step Solution
- Step 1: Write the proportion equation
1,421,474.12 : 1,961,982.84 = 809,987.33 : x - Step 2: Convert to fraction form
1,421,474.12/1,961,982.84 = 809,987.33/x - Step 3: Cross multiply
1,421,474.12x = 1,961,982.84 × 809,987.33 - Step 4: Simplify right side
1,421,474.12x = 1,589,181,232,149.41 - Step 5: Solve for x
x = 1,589,181,232,149.41/1,421,474.12 - Step 6: Final answer
x = 1,117,981.12
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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.