Finding the Fourth Proportional to 644,363.96, 889,170.14 and 372,449.48
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Solution
The fourth proportional to 644,363.96, 889,170.14 and 372,449.48 is: 513,950.15
Step by Step Solution
- Step 1: Write the proportion equation
644,363.96 : 889,170.14 = 372,449.48 : x - Step 2: Convert to fraction form
644,363.96/889,170.14 = 372,449.48/x - Step 3: Cross multiply
644,363.96x = 889,170.14 × 372,449.48 - Step 4: Simplify right side
644,363.96x = 331,170,956,274.53 - Step 5: Solve for x
x = 331,170,956,274.53/644,363.96 - Step 6: Final answer
x = 513,950.15
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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.