Finding the Fourth Proportional to 919,077.21, 1,268,237.70 and 531,815.40
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Solution
The fourth proportional to 919,077.21, 1,268,237.70 and 531,815.40 is: 733,853.84
Step by Step Solution
- Step 1: Write the proportion equation
919,077.21 : 1,268,237.70 = 531,815.40 : x - Step 2: Convert to fraction form
919,077.21/1,268,237.70 = 531,815.40/x - Step 3: Cross multiply
919,077.21x = 1,268,237.70 × 531,815.40 - Step 4: Simplify right side
919,077.21x = 674,468,339,720.58 - Step 5: Solve for x
x = 674,468,339,720.58/919,077.21 - Step 6: Final answer
x = 733,853.84
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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.