Finding the Fourth Proportional to 391,831.80, 587,747.70 and 96,343.80
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Solution
The fourth proportional to 391,831.80, 587,747.70 and 96,343.80 is: 144,515.70
Step by Step Solution
- Step 1: Write the proportion equation
391,831.80 : 587,747.70 = 96,343.80 : x - Step 2: Convert to fraction form
391,831.80/587,747.70 = 96,343.80/x - Step 3: Cross multiply
391,831.80x = 587,747.70 × 96,343.80 - Step 4: Simplify right side
391,831.80x = 56,625,846,859.26 - Step 5: Solve for x
x = 56,625,846,859.26/391,831.80 - Step 6: Final answer
x = 144,515.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.