Finding the Fourth Proportional to 512,135.60, 768,203.40 and 423,489.20
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Solution
The fourth proportional to 512,135.60, 768,203.40 and 423,489.20 is: 635,233.80
Step by Step Solution
- Step 1: Write the proportion equation
512,135.60 : 768,203.40 = 423,489.20 : x - Step 2: Convert to fraction form
512,135.60/768,203.40 = 423,489.20/x - Step 3: Cross multiply
512,135.60x = 768,203.40 × 423,489.20 - Step 4: Simplify right side
512,135.60x = 325,325,843,303.28 - Step 5: Solve for x
x = 325,325,843,303.28/512,135.60 - Step 6: Final answer
x = 635,233.80
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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.