Finding the Fourth Proportional to 817,727.41, 1,128,455.21 and 455,145.49
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Solution
The fourth proportional to 817,727.41, 1,128,455.21 and 455,145.49 is: 628,095.98
Step by Step Solution
- Step 1: Write the proportion equation
817,727.41 : 1,128,455.21 = 455,145.49 : x - Step 2: Convert to fraction form
817,727.41/1,128,455.21 = 455,145.49/x - Step 3: Cross multiply
817,727.41x = 1,128,455.21 × 455,145.49 - Step 4: Simplify right side
817,727.41x = 513,611,297,222.78 - Step 5: Solve for x
x = 513,611,297,222.78/817,727.41 - Step 6: Final answer
x = 628,095.98
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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.