Finding the Fourth Proportional to 644,579.20, 967,014.60 and 378,202.60
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Solution
The fourth proportional to 644,579.20, 967,014.60 and 378,202.60 is: 567,389.45
Step by Step Solution
- Step 1: Write the proportion equation
644,579.20 : 967,014.60 = 378,202.60 : x - Step 2: Convert to fraction form
644,579.20/967,014.60 = 378,202.60/x - Step 3: Cross multiply
644,579.20x = 967,014.60 × 378,202.60 - Step 4: Simplify right side
644,579.20x = 365,727,435,957.96 - Step 5: Solve for x
x = 365,727,435,957.96/644,579.20 - Step 6: Final answer
x = 567,389.45
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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.