Finding the Fourth Proportional to 1,146,408.40, 1,719,612.60 and 1,128,693.70
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Solution
The fourth proportional to 1,146,408.40, 1,719,612.60 and 1,128,693.70 is: 1,693,040.55
Step by Step Solution
- Step 1: Write the proportion equation
1,146,408.40 : 1,719,612.60 = 1,128,693.70 : x - Step 2: Convert to fraction form
1,146,408.40/1,719,612.60 = 1,128,693.70/x - Step 3: Cross multiply
1,146,408.40x = 1,719,612.60 × 1,128,693.70 - Step 4: Simplify right side
1,146,408.40x = 1,940,915,908,060.62 - Step 5: Solve for x
x = 1,940,915,908,060.62/1,146,408.40 - Step 6: Final answer
x = 1,693,040.55
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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.