Finding the Fourth Proportional to 642,135.33, 886,153.26 and 387,437.31
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Solution
The fourth proportional to 642,135.33, 886,153.26 and 387,437.31 is: 534,667.41
Step by Step Solution
- Step 1: Write the proportion equation
642,135.33 : 886,153.26 = 387,437.31 : x - Step 2: Convert to fraction form
642,135.33/886,153.26 = 387,437.31/x - Step 3: Cross multiply
642,135.33x = 886,153.26 × 387,437.31 - Step 4: Simplify right side
642,135.33x = 343,328,835,302.13 - Step 5: Solve for x
x = 343,328,835,302.13/642,135.33 - Step 6: Final answer
x = 534,667.41
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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.