Finding the Fourth Proportional to 644,146.62, 889,031.64 and 372,372.06
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Solution
The fourth proportional to 644,146.62, 889,031.64 and 372,372.06 is: 513,936.63
Step by Step Solution
- Step 1: Write the proportion equation
644,146.62 : 889,031.64 = 372,372.06 : x - Step 2: Convert to fraction form
644,146.62/889,031.64 = 372,372.06/x - Step 3: Cross multiply
644,146.62x = 889,031.64 × 372,372.06 - Step 4: Simplify right side
644,146.62x = 331,050,543,191.98 - Step 5: Solve for x
x = 331,050,543,191.98/644,146.62 - Step 6: Final answer
x = 513,936.63
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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.