Finding the Fourth Proportional to 817,743.26, 1,128,485.76 and 455,159.32
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Solution
The fourth proportional to 817,743.26, 1,128,485.76 and 455,159.32 is: 628,119.90
Step by Step Solution
- Step 1: Write the proportion equation
817,743.26 : 1,128,485.76 = 455,159.32 : x - Step 2: Convert to fraction form
817,743.26/1,128,485.76 = 455,159.32/x - Step 3: Cross multiply
817,743.26x = 1,128,485.76 × 455,159.32 - Step 4: Simplify right side
817,743.26x = 513,640,811,151.28 - Step 5: Solve for x
x = 513,640,811,151.28/817,743.26 - Step 6: Final answer
x = 628,119.90
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.