Finding the Fourth Proportional to 879,038.52, 1,318,121.58 and 279,921.60
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Solution
The fourth proportional to 879,038.52, 1,318,121.58 and 279,921.60 is: 419,743.50
Step by Step Solution
- Step 1: Write the proportion equation
879,038.52 : 1,318,121.58 = 279,921.60 : x - Step 2: Convert to fraction form
879,038.52/1,318,121.58 = 279,921.60/x - Step 3: Cross multiply
879,038.52x = 1,318,121.58 × 279,921.60 - Step 4: Simplify right side
879,038.52x = 368,970,701,668.13 - Step 5: Solve for x
x = 368,970,701,668.13/879,038.52 - Step 6: Final answer
x = 419,743.50
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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.