Finding the Fourth Proportional to 1,543,489.44, 2,129,630.67 and 890,315.16
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Solution
The fourth proportional to 1,543,489.44, 2,129,630.67 and 890,315.16 is: 1,228,412.99
Step by Step Solution
- Step 1: Write the proportion equation
1,543,489.44 : 2,129,630.67 = 890,315.16 : x - Step 2: Convert to fraction form
1,543,489.44/2,129,630.67 = 890,315.16/x - Step 3: Cross multiply
1,543,489.44x = 2,129,630.67 × 890,315.16 - Step 4: Simplify right side
1,543,489.44x = 1,896,042,470,701.96 - Step 5: Solve for x
x = 1,896,042,470,701.96/1,543,489.44 - Step 6: Final answer
x = 1,228,412.99
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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.