Finding the Fourth Proportional to 515,358.53, 711,199.05 and 285,930.88
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Solution
The fourth proportional to 515,358.53, 711,199.05 and 285,930.88 is: 394,586.99
Step by Step Solution
- Step 1: Write the proportion equation
515,358.53 : 711,199.05 = 285,930.88 : x - Step 2: Convert to fraction form
515,358.53/711,199.05 = 285,930.88/x - Step 3: Cross multiply
515,358.53x = 711,199.05 × 285,930.88 - Step 4: Simplify right side
515,358.53x = 203,353,770,221.66 - Step 5: Solve for x
x = 203,353,770,221.66/515,358.53 - Step 6: Final answer
x = 394,586.99
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1.5x scale
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.