Finding the Fourth Proportional to 817,765.96, 1,128,517.14 and 455,182.12
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Solution
The fourth proportional to 817,765.96, 1,128,517.14 and 455,182.12 is: 628,151.39
Step by Step Solution
- Step 1: Write the proportion equation
817,765.96 : 1,128,517.14 = 455,182.12 : x - Step 2: Convert to fraction form
817,765.96/1,128,517.14 = 455,182.12/x - Step 3: Cross multiply
817,765.96x = 1,128,517.14 × 455,182.12 - Step 4: Simplify right side
817,765.96x = 513,680,824,241.54 - Step 5: Solve for x
x = 513,680,824,241.54/817,765.96 - Step 6: Final answer
x = 628,151.39
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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.