Finding the Fourth Proportional to 644,331.76, 889,149.04 and 386,351.12
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Solution
The fourth proportional to 644,331.76, 889,149.04 and 386,351.12 is: 533,147.28
Step by Step Solution
- Step 1: Write the proportion equation
644,331.76 : 889,149.04 = 386,351.12 : x - Step 2: Convert to fraction form
644,331.76/889,149.04 = 386,351.12/x - Step 3: Cross multiply
644,331.76x = 889,149.04 × 386,351.12 - Step 4: Simplify right side
644,331.76x = 343,523,727,450.93 - Step 5: Solve for x
x = 343,523,727,450.93/644,331.76 - Step 6: Final answer
x = 533,147.28
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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.