Finding the Fourth Proportional to 512,455.20, 768,682.80 and 276,259.20
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Solution
The fourth proportional to 512,455.20, 768,682.80 and 276,259.20 is: 414,388.80
Step by Step Solution
- Step 1: Write the proportion equation
512,455.20 : 768,682.80 = 276,259.20 : x - Step 2: Convert to fraction form
512,455.20/768,682.80 = 276,259.20/x - Step 3: Cross multiply
512,455.20x = 768,682.80 × 276,259.20 - Step 4: Simplify right side
512,455.20x = 212,355,695,381.76 - Step 5: Solve for x
x = 212,355,695,381.76/512,455.20 - Step 6: Final answer
x = 414,388.80
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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.