Finding the Fourth Proportional to 429,539.30, 644,304.84 and 261,106.14
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Solution
The fourth proportional to 429,539.30, 644,304.84 and 261,106.14 is: 391,656.71
Step by Step Solution
- Step 1: Write the proportion equation
429,539.30 : 644,304.84 = 261,106.14 : x - Step 2: Convert to fraction form
429,539.30/644,304.84 = 261,106.14/x - Step 3: Cross multiply
429,539.30x = 644,304.84 × 261,106.14 - Step 4: Simplify right side
429,539.30x = 168,231,949,755.72 - Step 5: Solve for x
x = 168,231,949,755.72/429,539.30 - Step 6: Final answer
x = 391,656.71
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.