Finding the Fourth Proportional to 790,955.81, 1,091,518.62 and 428,379.65
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Solution
The fourth proportional to 790,955.81, 1,091,518.62 and 428,379.65 is: 591,163.70
Step by Step Solution
- Step 1: Write the proportion equation
790,955.81 : 1,091,518.62 = 428,379.65 : x - Step 2: Convert to fraction form
790,955.81/1,091,518.62 = 428,379.65/x - Step 3: Cross multiply
790,955.81x = 1,091,518.62 × 428,379.65 - Step 4: Simplify right side
790,955.81x = 467,584,364,404.08 - Step 5: Solve for x
x = 467,584,364,404.08/790,955.81 - Step 6: Final answer
x = 591,163.70
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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.