Finding the Fourth Proportional to 1,660,917.60, 2,489,408.10 and 861,787.80
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Solution
The fourth proportional to 1,660,917.60, 2,489,408.10 and 861,787.80 is: 1,291,660.42
Step by Step Solution
- Step 1: Write the proportion equation
1,660,917.60 : 2,489,408.10 = 861,787.80 : x - Step 2: Convert to fraction form
1,660,917.60/2,489,408.10 = 861,787.80/x - Step 3: Cross multiply
1,660,917.60x = 2,489,408.10 × 861,787.80 - Step 4: Simplify right side
1,660,917.60x = 2,145,341,529,801.18 - Step 5: Solve for x
x = 2,145,341,529,801.18/1,660,917.60 - Step 6: Final answer
x = 1,291,660.42
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.