Finding the Fourth Proportional to 490,851.84, 677,372.16 and 278,883.84
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Solution
The fourth proportional to 490,851.84, 677,372.16 and 278,883.84 is: 384,857.78
Step by Step Solution
- Step 1: Write the proportion equation
490,851.84 : 677,372.16 = 278,883.84 : x - Step 2: Convert to fraction form
490,851.84/677,372.16 = 278,883.84/x - Step 3: Cross multiply
490,851.84x = 677,372.16 × 278,883.84 - Step 4: Simplify right side
490,851.84x = 188,908,149,089.89 - Step 5: Solve for x
x = 188,908,149,089.89/490,851.84 - Step 6: Final answer
x = 384,857.78
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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.