Finding the Fourth Proportional to 690,728.24, 1,036,232.46 and 217,303.49
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Solution
The fourth proportional to 690,728.24, 1,036,232.46 and 217,303.49 is: 325,999.31
Step by Step Solution
- Step 1: Write the proportion equation
690,728.24 : 1,036,232.46 = 217,303.49 : x - Step 2: Convert to fraction form
690,728.24/1,036,232.46 = 217,303.49/x - Step 3: Cross multiply
690,728.24x = 1,036,232.46 × 217,303.49 - Step 4: Simplify right side
690,728.24x = 225,176,930,009.29 - Step 5: Solve for x
x = 225,176,930,009.29/690,728.24 - Step 6: Final answer
x = 325,999.31
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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.