Finding the Fourth Proportional to 1,586,399.49, 2,189,231.34 and 861,246.18
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Solution
The fourth proportional to 1,586,399.49, 2,189,231.34 and 861,246.18 is: 1,188,519.75
Step by Step Solution
- Step 1: Write the proportion equation
1,586,399.49 : 2,189,231.34 = 861,246.18 : x - Step 2: Convert to fraction form
1,586,399.49/2,189,231.34 = 861,246.18/x - Step 3: Cross multiply
1,586,399.49x = 2,189,231.34 × 861,246.18 - Step 4: Simplify right side
1,586,399.49x = 1,885,467,128,711.28 - Step 5: Solve for x
x = 1,885,467,128,711.28/1,586,399.49 - Step 6: Final answer
x = 1,188,519.75
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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.