Finding the Fourth Proportional to 678,489.75, 1,018,201.19 and 235,257.75
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Solution
The fourth proportional to 678,489.75, 1,018,201.19 and 235,257.75 is: 353,048.40
Step by Step Solution
- Step 1: Write the proportion equation
678,489.75 : 1,018,201.19 = 235,257.75 : x - Step 2: Convert to fraction form
678,489.75/1,018,201.19 = 235,257.75/x - Step 3: Cross multiply
678,489.75x = 1,018,201.19 × 235,257.75 - Step 4: Simplify right side
678,489.75x = 239,539,719,830.43 - Step 5: Solve for x
x = 239,539,719,830.43/678,489.75 - Step 6: Final answer
x = 353,048.40
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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.