Finding the Fourth Proportional to 512,021.70, 768,032.55 and 512,021.70
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Solution
The fourth proportional to 512,021.70, 768,032.55 and 512,021.70 is: 768,032.55
Step by Step Solution
- Step 1: Write the proportion equation
512,021.70 : 768,032.55 = 512,021.70 : x - Step 2: Convert to fraction form
512,021.70/768,032.55 = 512,021.70/x - Step 3: Cross multiply
512,021.70x = 768,032.55 × 512,021.70 - Step 4: Simplify right side
512,021.70x = 393,249,331,906.34 - Step 5: Solve for x
x = 393,249,331,906.34/512,021.70 - Step 6: Final answer
x = 768,032.55
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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.