Finding the Fourth Proportional to 656,272.42, 905,656.56 and 354,466.42
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Solution
The fourth proportional to 656,272.42, 905,656.56 and 354,466.42 is: 489,163.99
Step by Step Solution
- Step 1: Write the proportion equation
656,272.42 : 905,656.56 = 354,466.42 : x - Step 2: Convert to fraction form
656,272.42/905,656.56 = 354,466.42/x - Step 3: Cross multiply
656,272.42x = 905,656.56 × 354,466.42 - Step 4: Simplify right side
656,272.42x = 321,024,836,800.38 - Step 5: Solve for x
x = 321,024,836,800.38/656,272.42 - Step 6: Final answer
x = 489,163.99
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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.