Finding the Fourth Proportional to 644,838.24, 967,421.28 and 378,823.68
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Solution
The fourth proportional to 644,838.24, 967,421.28 and 378,823.68 is: 568,331.82
Step by Step Solution
- Step 1: Write the proportion equation
644,838.24 : 967,421.28 = 378,823.68 : x - Step 2: Convert to fraction form
644,838.24/967,421.28 = 378,823.68/x - Step 3: Cross multiply
644,838.24x = 967,421.28 × 378,823.68 - Step 4: Simplify right side
644,838.24x = 366,482,089,399.91 - Step 5: Solve for x
x = 366,482,089,399.91/644,838.24 - Step 6: Final answer
x = 568,331.82
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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.