Finding the Fourth Proportional to 405,915.80, 608,873.70 and 125,432.60
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Solution
The fourth proportional to 405,915.80, 608,873.70 and 125,432.60 is: 188,148.90
Step by Step Solution
- Step 1: Write the proportion equation
405,915.80 : 608,873.70 = 125,432.60 : x - Step 2: Convert to fraction form
405,915.80/608,873.70 = 125,432.60/x - Step 3: Cross multiply
405,915.80x = 608,873.70 × 125,432.60 - Step 4: Simplify right side
405,915.80x = 76,372,611,262.62 - Step 5: Solve for x
x = 76,372,611,262.62/405,915.80 - Step 6: Final answer
x = 188,148.90
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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.