Finding the Fourth Proportional to 512,373.68, 768,558.84 and 138,396.80
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Solution
The fourth proportional to 512,373.68, 768,558.84 and 138,396.80 is: 207,594.75
Step by Step Solution
- Step 1: Write the proportion equation
512,373.68 : 768,558.84 = 138,396.80 : x - Step 2: Convert to fraction form
512,373.68/768,558.84 = 138,396.80/x - Step 3: Cross multiply
512,373.68x = 768,558.84 × 138,396.80 - Step 4: Simplify right side
512,373.68x = 106,366,084,067.71 - Step 5: Solve for x
x = 106,366,084,067.71/512,373.68 - Step 6: Final answer
x = 207,594.75
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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.