Finding the Fourth Proportional to 890,016.36, 1,335,106.56 and 290,980.68
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Solution
The fourth proportional to 890,016.36, 1,335,106.56 and 290,980.68 is: 436,497.84
Step by Step Solution
- Step 1: Write the proportion equation
890,016.36 : 1,335,106.56 = 290,980.68 : x - Step 2: Convert to fraction form
890,016.36/1,335,106.56 = 290,980.68/x - Step 3: Cross multiply
890,016.36x = 1,335,106.56 × 290,980.68 - Step 4: Simplify right side
890,016.36x = 388,490,214,701.26 - Step 5: Solve for x
x = 388,490,214,701.26/890,016.36 - Step 6: Final answer
x = 436,497.84
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.