Finding the Fourth Proportional to 871,515.18, 1,202,691.65 and 489,542.27
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Solution
The fourth proportional to 871,515.18, 1,202,691.65 and 489,542.27 is: 675,568.72
Step by Step Solution
- Step 1: Write the proportion equation
871,515.18 : 1,202,691.65 = 489,542.27 : x - Step 2: Convert to fraction form
871,515.18/1,202,691.65 = 489,542.27/x - Step 3: Cross multiply
871,515.18x = 1,202,691.65 × 489,542.27 - Step 4: Simplify right side
871,515.18x = 588,768,391,989.88 - Step 5: Solve for x
x = 588,768,391,989.88/871,515.18 - Step 6: Final answer
x = 675,568.72
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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.