Finding the Fourth Proportional to 420,649.60, 629,745.60 and 376,412.80
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Solution
The fourth proportional to 420,649.60, 629,745.60 and 376,412.80 is: 563,519.62
Step by Step Solution
- Step 1: Write the proportion equation
420,649.60 : 629,745.60 = 376,412.80 : x - Step 2: Convert to fraction form
420,649.60/629,745.60 = 376,412.80/x - Step 3: Cross multiply
420,649.60x = 629,745.60 × 376,412.80 - Step 4: Simplify right side
420,649.60x = 237,044,304,583.68 - Step 5: Solve for x
x = 237,044,304,583.68/420,649.60 - Step 6: Final answer
x = 563,519.62
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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.