Finding the Fourth Proportional to 490,659.53, 677,010.76 and 286,671.05
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Solution
The fourth proportional to 490,659.53, 677,010.76 and 286,671.05 is: 395,547.98
Step by Step Solution
- Step 1: Write the proportion equation
490,659.53 : 677,010.76 = 286,671.05 : x - Step 2: Convert to fraction form
490,659.53/677,010.76 = 286,671.05/x - Step 3: Cross multiply
490,659.53x = 677,010.76 × 286,671.05 - Step 4: Simplify right side
490,659.53x = 194,079,383,867.56 - Step 5: Solve for x
x = 194,079,383,867.56/490,659.53 - Step 6: Final answer
x = 395,547.98
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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.