Finding the Fourth Proportional to 782,390.48, 1,079,725.44 and 438,241.19
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Solution
The fourth proportional to 782,390.48, 1,079,725.44 and 438,241.19 is: 604,787.73
Step by Step Solution
- Step 1: Write the proportion equation
782,390.48 : 1,079,725.44 = 438,241.19 : x - Step 2: Convert to fraction form
782,390.48/1,079,725.44 = 438,241.19/x - Step 3: Cross multiply
782,390.48x = 1,079,725.44 × 438,241.19 - Step 4: Simplify right side
782,390.48x = 473,180,161,698.87 - Step 5: Solve for x
x = 473,180,161,698.87/782,390.48 - Step 6: Final answer
x = 604,787.73
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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.