Finding the Fourth Proportional to 639,511.01, 959,361.29 and 212,907.50
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Solution
The fourth proportional to 639,511.01, 959,361.29 and 212,907.50 is: 319,392.80
Step by Step Solution
- Step 1: Write the proportion equation
639,511.01 : 959,361.29 = 212,907.50 : x - Step 2: Convert to fraction form
639,511.01/959,361.29 = 212,907.50/x - Step 3: Cross multiply
639,511.01x = 959,361.29 × 212,907.50 - Step 4: Simplify right side
639,511.01x = 204,255,207,989.33 - Step 5: Solve for x
x = 204,255,207,989.33/639,511.01 - Step 6: Final answer
x = 319,392.80
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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.