Finding the Fourth Proportional to 817,744.26, 1,128,487.14 and 455,160.32
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Solution
The fourth proportional to 817,744.26, 1,128,487.14 and 455,160.32 is: 628,121.28
Step by Step Solution
- Step 1: Write the proportion equation
817,744.26 : 1,128,487.14 = 455,160.32 : x - Step 2: Convert to fraction form
817,744.26/1,128,487.14 = 455,160.32/x - Step 3: Cross multiply
817,744.26x = 1,128,487.14 × 455,160.32 - Step 4: Simplify right side
817,744.26x = 513,642,567,758.29 - Step 5: Solve for x
x = 513,642,567,758.29/817,744.26 - Step 6: Final answer
x = 628,121.28
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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.