Finding the Fourth Proportional to 644,453.48, 889,228.56 and 372,421.68
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Solution
The fourth proportional to 644,453.48, 889,228.56 and 372,421.68 is: 513,874.17
Step by Step Solution
- Step 1: Write the proportion equation
644,453.48 : 889,228.56 = 372,421.68 : x - Step 2: Convert to fraction form
644,453.48/889,228.56 = 372,421.68/x - Step 3: Cross multiply
644,453.48x = 889,228.56 × 372,421.68 - Step 4: Simplify right side
644,453.48x = 331,167,994,219.18 - Step 5: Solve for x
x = 331,167,994,219.18/644,453.48 - Step 6: Final answer
x = 513,874.17
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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.