Finding the Fourth Proportional to 902,139.75, 1,244,952.86 and 499,731.75
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Solution
The fourth proportional to 902,139.75, 1,244,952.86 and 499,731.75 is: 689,629.82
Step by Step Solution
- Step 1: Write the proportion equation
902,139.75 : 1,244,952.86 = 499,731.75 : x - Step 2: Convert to fraction form
902,139.75/1,244,952.86 = 499,731.75/x - Step 3: Cross multiply
902,139.75x = 1,244,952.86 × 499,731.75 - Step 4: Simplify right side
902,139.75x = 622,142,468,896.65 - Step 5: Solve for x
x = 622,142,468,896.65/902,139.75 - Step 6: Final answer
x = 689,629.82
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.