Finding the Fourth Proportional to 385,905.80, 578,858.70 and 339,249.80
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Solution
The fourth proportional to 385,905.80, 578,858.70 and 339,249.80 is: 508,874.70
Step by Step Solution
- Step 1: Write the proportion equation
385,905.80 : 578,858.70 = 339,249.80 : x - Step 2: Convert to fraction form
385,905.80/578,858.70 = 339,249.80/x - Step 3: Cross multiply
385,905.80x = 578,858.70 × 339,249.80 - Step 4: Simplify right side
385,905.80x = 196,377,698,203.26 - Step 5: Solve for x
x = 196,377,698,203.26/385,905.80 - Step 6: Final answer
x = 508,874.70
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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.