Finding the Fourth Proportional to 879,037.52, 1,318,120.08 and 279,920.62
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Solution
The fourth proportional to 879,037.52, 1,318,120.08 and 279,920.62 is: 419,742.03
Step by Step Solution
- Step 1: Write the proportion equation
879,037.52 : 1,318,120.08 = 279,920.62 : x - Step 2: Convert to fraction form
879,037.52/1,318,120.08 = 279,920.62/x - Step 3: Cross multiply
879,037.52x = 1,318,120.08 × 279,920.62 - Step 4: Simplify right side
879,037.52x = 368,968,990,028.05 - Step 5: Solve for x
x = 368,968,990,028.05/879,037.52 - Step 6: Final answer
x = 419,742.03
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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.