Finding the Fourth Proportional to 839,952.70, 1,259,929.05 and 278,987.20
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Solution
The fourth proportional to 839,952.70, 1,259,929.05 and 278,987.20 is: 418,480.80
Step by Step Solution
- Step 1: Write the proportion equation
839,952.70 : 1,259,929.05 = 278,987.20 : x - Step 2: Convert to fraction form
839,952.70/1,259,929.05 = 278,987.20/x - Step 3: Cross multiply
839,952.70x = 1,259,929.05 × 278,987.20 - Step 4: Simplify right side
839,952.70x = 351,504,077,858.16 - Step 5: Solve for x
x = 351,504,077,858.16/839,952.70 - Step 6: Final answer
x = 418,480.80
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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.