Finding the Fourth Proportional to 420,697.36, 580,558.08 and 259,487.92
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Solution
The fourth proportional to 420,697.36, 580,558.08 and 259,487.92 is: 358,090.69
Step by Step Solution
- Step 1: Write the proportion equation
420,697.36 : 580,558.08 = 259,487.92 : x - Step 2: Convert to fraction form
420,697.36/580,558.08 = 259,487.92/x - Step 3: Cross multiply
420,697.36x = 580,558.08 × 259,487.92 - Step 4: Simplify right side
420,697.36x = 150,647,808,618.39 - Step 5: Solve for x
x = 150,647,808,618.39/420,697.36 - Step 6: Final answer
x = 358,090.69
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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.