Finding the Fourth Proportional to 1,381,289.36, 1,905,926.36 and 769,426.90
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Solution
The fourth proportional to 1,381,289.36, 1,905,926.36 and 769,426.90 is: 1,061,668.21
Step by Step Solution
- Step 1: Write the proportion equation
1,381,289.36 : 1,905,926.36 = 769,426.90 : x - Step 2: Convert to fraction form
1,381,289.36/1,905,926.36 = 769,426.90/x - Step 3: Cross multiply
1,381,289.36x = 1,905,926.36 × 769,426.90 - Step 4: Simplify right side
1,381,289.36x = 1,466,471,002,191.13 - Step 5: Solve for x
x = 1,466,471,002,191.13/1,381,289.36 - Step 6: Final answer
x = 1,061,668.21
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.