Finding the Fourth Proportional to 726,134.40, 1,089,201.60 and 411,206.40
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Solution
The fourth proportional to 726,134.40, 1,089,201.60 and 411,206.40 is: 616,809.60
Step by Step Solution
- Step 1: Write the proportion equation
726,134.40 : 1,089,201.60 = 411,206.40 : x - Step 2: Convert to fraction form
726,134.40/1,089,201.60 = 411,206.40/x - Step 3: Cross multiply
726,134.40x = 1,089,201.60 × 411,206.40 - Step 4: Simplify right side
726,134.40x = 447,886,668,810.24 - Step 5: Solve for x
x = 447,886,668,810.24/726,134.40 - Step 6: Final answer
x = 616,809.60
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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.