Finding the Fourth Proportional to 1,421,244.36, 1,961,309.97 and 840,676.05
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Solution
The fourth proportional to 1,421,244.36, 1,961,309.97 and 840,676.05 is: 1,160,128.66
Step by Step Solution
- Step 1: Write the proportion equation
1,421,244.36 : 1,961,309.97 = 840,676.05 : x - Step 2: Convert to fraction form
1,421,244.36/1,961,309.97 = 840,676.05/x - Step 3: Cross multiply
1,421,244.36x = 1,961,309.97 × 840,676.05 - Step 4: Simplify right side
1,421,244.36x = 1,648,826,318,405.22 - Step 5: Solve for x
x = 1,648,826,318,405.22/1,421,244.36 - Step 6: Final answer
x = 1,160,128.66
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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.