Finding the Fourth Proportional to 643,831.98, 965,757.12 and 194,556.60
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Solution
The fourth proportional to 643,831.98, 965,757.12 and 194,556.60 is: 291,837.66
Step by Step Solution
- Step 1: Write the proportion equation
643,831.98 : 965,757.12 = 194,556.60 : x - Step 2: Convert to fraction form
643,831.98/965,757.12 = 194,556.60/x - Step 3: Cross multiply
643,831.98x = 965,757.12 × 194,556.60 - Step 4: Simplify right side
643,831.98x = 187,894,421,692.99 - Step 5: Solve for x
x = 187,894,421,692.99/643,831.98 - Step 6: Final answer
x = 291,837.66
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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.