Finding the Fourth Proportional to 979,815.75, 1,469,728.58 and 305,840.55
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Solution
The fourth proportional to 979,815.75, 1,469,728.58 and 305,840.55 is: 458,762.38
Step by Step Solution
- Step 1: Write the proportion equation
979,815.75 : 1,469,728.58 = 305,840.55 : x - Step 2: Convert to fraction form
979,815.75/1,469,728.58 = 305,840.55/x - Step 3: Cross multiply
979,815.75x = 1,469,728.58 × 305,840.55 - Step 4: Simplify right side
979,815.75x = 449,502,602,387.10 - Step 5: Solve for x
x = 449,502,602,387.10/979,815.75 - Step 6: Final answer
x = 458,762.38
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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.