Finding the Fourth Proportional to 817,611.92, 1,128,304.46 and 455,121.41
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Solution
The fourth proportional to 817,611.92, 1,128,304.46 and 455,121.41 is: 628,067.55
Step by Step Solution
- Step 1: Write the proportion equation
817,611.92 : 1,128,304.46 = 455,121.41 : x - Step 2: Convert to fraction form
817,611.92/1,128,304.46 = 455,121.41/x - Step 3: Cross multiply
817,611.92x = 1,128,304.46 × 455,121.41 - Step 4: Simplify right side
817,611.92x = 513,515,508,827.36 - Step 5: Solve for x
x = 513,515,508,827.36/817,611.92 - Step 6: Final answer
x = 628,067.55
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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.