Finding the Fourth Proportional to 629,889.81, 869,257.34 and 343,414.68
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Solution
The fourth proportional to 629,889.81, 869,257.34 and 343,414.68 is: 473,917.38
Step by Step Solution
- Step 1: Write the proportion equation
629,889.81 : 869,257.34 = 343,414.68 : x - Step 2: Convert to fraction form
629,889.81/869,257.34 = 343,414.68/x - Step 3: Cross multiply
629,889.81x = 869,257.34 × 343,414.68 - Step 4: Simplify right side
629,889.81x = 298,515,731,253.75 - Step 5: Solve for x
x = 298,515,731,253.75/629,889.81 - Step 6: Final answer
x = 473,917.38
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1.5x scale
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.