Finding the Fourth Proportional to 458,529.80, 687,794.70 and 427,425.80
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Solution
The fourth proportional to 458,529.80, 687,794.70 and 427,425.80 is: 641,138.70
Step by Step Solution
- Step 1: Write the proportion equation
458,529.80 : 687,794.70 = 427,425.80 : x - Step 2: Convert to fraction form
458,529.80/687,794.70 = 427,425.80/x - Step 3: Cross multiply
458,529.80x = 687,794.70 × 427,425.80 - Step 4: Simplify right side
458,529.80x = 293,981,199,883.26 - Step 5: Solve for x
x = 293,981,199,883.26/458,529.80 - Step 6: Final answer
x = 641,138.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.