Finding the Fourth Proportional to 418,878.70, 628,318.05 and 324,400.30
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Solution
The fourth proportional to 418,878.70, 628,318.05 and 324,400.30 is: 486,600.45
Step by Step Solution
- Step 1: Write the proportion equation
418,878.70 : 628,318.05 = 324,400.30 : x - Step 2: Convert to fraction form
418,878.70/628,318.05 = 324,400.30/x - Step 3: Cross multiply
418,878.70x = 628,318.05 × 324,400.30 - Step 4: Simplify right side
418,878.70x = 203,826,563,915.42 - Step 5: Solve for x
x = 203,826,563,915.42/418,878.70 - Step 6: Final answer
x = 486,600.45
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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.