Finding the Fourth Proportional to 644,742.92, 889,754.10 and 358,257.80
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Solution
The fourth proportional to 644,742.92, 889,754.10 and 358,257.80 is: 494,400.69
Step by Step Solution
- Step 1: Write the proportion equation
644,742.92 : 889,754.10 = 358,257.80 : x - Step 2: Convert to fraction form
644,742.92/889,754.10 = 358,257.80/x - Step 3: Cross multiply
644,742.92x = 889,754.10 × 358,257.80 - Step 4: Simplify right side
644,742.92x = 318,761,346,406.98 - Step 5: Solve for x
x = 318,761,346,406.98/644,742.92 - Step 6: Final answer
x = 494,400.69
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.