Finding the Fourth Proportional to 1,137,665.55, 1,706,187.29 and 427,638.99
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Solution
The fourth proportional to 1,137,665.55, 1,706,187.29 and 427,638.99 is: 641,341.57
Step by Step Solution
- Step 1: Write the proportion equation
1,137,665.55 : 1,706,187.29 = 427,638.99 : x - Step 2: Convert to fraction form
1,137,665.55/1,706,187.29 = 427,638.99/x - Step 3: Cross multiply
1,137,665.55x = 1,706,187.29 × 427,638.99 - Step 4: Simplify right side
1,137,665.55x = 729,632,207,308.24 - Step 5: Solve for x
x = 729,632,207,308.24/1,137,665.55 - Step 6: Final answer
x = 641,341.57
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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.