Finding the Fourth Proportional to 1,391,376.53, 2,089,434.44 and 905,885.08
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Solution
The fourth proportional to 1,391,376.53, 2,089,434.44 and 905,885.08 is: 1,360,370.43
Step by Step Solution
- Step 1: Write the proportion equation
1,391,376.53 : 2,089,434.44 = 905,885.08 : x - Step 2: Convert to fraction form
1,391,376.53/2,089,434.44 = 905,885.08/x - Step 3: Cross multiply
1,391,376.53x = 2,089,434.44 × 905,885.08 - Step 4: Simplify right side
1,391,376.53x = 1,892,787,479,717.95 - Step 5: Solve for x
x = 1,892,787,479,717.95/1,391,376.53 - Step 6: Final answer
x = 1,360,370.43
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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.