Finding the Fourth Proportional to 1,188,742.26, 1,783,107.20 and 290,188.74
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Solution
The fourth proportional to 1,188,742.26, 1,783,107.20 and 290,188.74 is: 435,281.60
Step by Step Solution
- Step 1: Write the proportion equation
1,188,742.26 : 1,783,107.20 = 290,188.74 : x - Step 2: Convert to fraction form
1,188,742.26/1,783,107.20 = 290,188.74/x - Step 3: Cross multiply
1,188,742.26x = 1,783,107.20 × 290,188.74 - Step 4: Simplify right side
1,188,742.26x = 517,437,631,652.93 - Step 5: Solve for x
x = 517,437,631,652.93/1,188,742.26 - Step 6: Final answer
x = 435,281.60
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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.