Finding the Fourth Proportional to 685,905.80, 1,028,858.70 and 187,269.80
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Solution
The fourth proportional to 685,905.80, 1,028,858.70 and 187,269.80 is: 280,904.70
Step by Step Solution
- Step 1: Write the proportion equation
685,905.80 : 1,028,858.70 = 187,269.80 : x - Step 2: Convert to fraction form
685,905.80/1,028,858.70 = 187,269.80/x - Step 3: Cross multiply
685,905.80x = 1,028,858.70 × 187,269.80 - Step 4: Simplify right side
685,905.80x = 192,674,162,977.26 - Step 5: Solve for x
x = 192,674,162,977.26/685,905.80 - Step 6: Final answer
x = 280,904.70
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1.5x scale
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.