Finding the Fourth Proportional to 603,742.56, 832,286.81 and 421,890.09
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Solution
The fourth proportional to 603,742.56, 832,286.81 and 421,890.09 is: 581,594.83
Step by Step Solution
- Step 1: Write the proportion equation
603,742.56 : 832,286.81 = 421,890.09 : x - Step 2: Convert to fraction form
603,742.56/832,286.81 = 421,890.09/x - Step 3: Cross multiply
603,742.56x = 832,286.81 × 421,890.09 - Step 4: Simplify right side
603,742.56x = 351,133,555,110.36 - Step 5: Solve for x
x = 351,133,555,110.36/603,742.56 - Step 6: Final answer
x = 581,594.83
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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.