Finding the Fourth Proportional to 878,784.72, 1,318,177.08 and 279,743.28
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Solution
The fourth proportional to 878,784.72, 1,318,177.08 and 279,743.28 is: 419,614.92
Step by Step Solution
- Step 1: Write the proportion equation
878,784.72 : 1,318,177.08 = 279,743.28 : x - Step 2: Convert to fraction form
878,784.72/1,318,177.08 = 279,743.28/x - Step 3: Cross multiply
878,784.72x = 1,318,177.08 × 279,743.28 - Step 4: Simplify right side
878,784.72x = 368,751,179,980.02 - Step 5: Solve for x
x = 368,751,179,980.02/878,784.72 - Step 6: Final answer
x = 419,614.92
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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.