Finding the Fourth Proportional to 513,007.70, 769,511.55 and 276,811.70
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Solution
The fourth proportional to 513,007.70, 769,511.55 and 276,811.70 is: 415,217.55
Step by Step Solution
- Step 1: Write the proportion equation
513,007.70 : 769,511.55 = 276,811.70 : x - Step 2: Convert to fraction form
513,007.70/769,511.55 = 276,811.70/x - Step 3: Cross multiply
513,007.70x = 769,511.55 × 276,811.70 - Step 4: Simplify right side
513,007.70x = 213,009,800,325.14 - Step 5: Solve for x
x = 213,009,800,325.14/513,007.70 - Step 6: Final answer
x = 415,217.55
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Similar ratio
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1.5x scale
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.