Finding the Fourth Proportional to 809,478.63, 1,214,201.21 and 269,774.06
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Solution
The fourth proportional to 809,478.63, 1,214,201.21 and 269,774.06 is: 404,655.50
Step by Step Solution
- Step 1: Write the proportion equation
809,478.63 : 1,214,201.21 = 269,774.06 : x - Step 2: Convert to fraction form
809,478.63/1,214,201.21 = 269,774.06/x - Step 3: Cross multiply
809,478.63x = 1,214,201.21 × 269,774.06 - Step 4: Simplify right side
809,478.63x = 327,559,982,658.74 - Step 5: Solve for x
x = 327,559,982,658.74/809,478.63 - Step 6: Final answer
x = 404,655.50
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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.