Finding the Fourth Proportional to 813,422.09, 1,122,589.67 and 450,959.65
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Solution
The fourth proportional to 813,422.09, 1,122,589.67 and 450,959.65 is: 622,361.56
Step by Step Solution
- Step 1: Write the proportion equation
813,422.09 : 1,122,589.67 = 450,959.65 : x - Step 2: Convert to fraction form
813,422.09/1,122,589.67 = 450,959.65/x - Step 3: Cross multiply
813,422.09x = 1,122,589.67 × 450,959.65 - Step 4: Simplify right side
813,422.09x = 506,242,639,615.54 - Step 5: Solve for x
x = 506,242,639,615.54/813,422.09 - Step 6: Final answer
x = 622,361.56
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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.