Finding the Fourth Proportional to 645,089.00, 890,245.67 and 354,722.60
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Solution
The fourth proportional to 645,089.00, 890,245.67 and 354,722.60 is: 489,529.75
Step by Step Solution
- Step 1: Write the proportion equation
645,089.00 : 890,245.67 = 354,722.60 : x - Step 2: Convert to fraction form
645,089.00/890,245.67 = 354,722.60/x - Step 3: Cross multiply
645,089.00x = 890,245.67 × 354,722.60 - Step 4: Simplify right side
645,089.00x = 315,790,252,476.30 - Step 5: Solve for x
x = 315,790,252,476.30/645,089.00 - Step 6: Final answer
x = 489,529.75
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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.