Finding the Fourth Proportional to 867,225.92, 1,299,155.70 and 639,107.24
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Solution
The fourth proportional to 867,225.92, 1,299,155.70 and 639,107.24 is: 957,420.43
Step by Step Solution
- Step 1: Write the proportion equation
867,225.92 : 1,299,155.70 = 639,107.24 : x - Step 2: Convert to fraction form
867,225.92/1,299,155.70 = 639,107.24/x - Step 3: Cross multiply
867,225.92x = 1,299,155.70 × 639,107.24 - Step 4: Simplify right side
867,225.92x = 830,299,813,757.27 - Step 5: Solve for x
x = 830,299,813,757.27/867,225.92 - Step 6: Final answer
x = 957,420.43
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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.