Finding the Fourth Proportional to 751,935.36, 1,128,155.68 and 278,658.88
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Solution
The fourth proportional to 751,935.36, 1,128,155.68 and 278,658.88 is: 418,081.95
Step by Step Solution
- Step 1: Write the proportion equation
751,935.36 : 1,128,155.68 = 278,658.88 : x - Step 2: Convert to fraction form
751,935.36/1,128,155.68 = 278,658.88/x - Step 3: Cross multiply
751,935.36x = 1,128,155.68 × 278,658.88 - Step 4: Simplify right side
751,935.36x = 314,370,598,254.44 - Step 5: Solve for x
x = 314,370,598,254.44/751,935.36 - Step 6: Final answer
x = 418,081.95
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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.