Finding the Fourth Proportional to 644,301.38, 889,029.18 and 372,394.63
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Solution
The fourth proportional to 644,301.38, 889,029.18 and 372,394.63 is: 513,842.90
Step by Step Solution
- Step 1: Write the proportion equation
644,301.38 : 889,029.18 = 372,394.63 : x - Step 2: Convert to fraction form
644,301.38/889,029.18 = 372,394.63/x - Step 3: Cross multiply
644,301.38x = 889,029.18 × 372,394.63 - Step 4: Simplify right side
644,301.38x = 331,069,688,100.16 - Step 5: Solve for x
x = 331,069,688,100.16/644,301.38 - Step 6: Final answer
x = 513,842.90
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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.