Finding the Fourth Proportional to 1,097,013.99, 1,638,230.91 and 1,085,138.58
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Solution
The fourth proportional to 1,097,013.99, 1,638,230.91 and 1,085,138.58 is: 1,620,496.71
Step by Step Solution
- Step 1: Write the proportion equation
1,097,013.99 : 1,638,230.91 = 1,085,138.58 : x - Step 2: Convert to fraction form
1,097,013.99/1,638,230.91 = 1,085,138.58/x - Step 3: Cross multiply
1,097,013.99x = 1,638,230.91 × 1,085,138.58 - Step 4: Simplify right side
1,097,013.99x = 1,777,707,563,389.51 - Step 5: Solve for x
x = 1,777,707,563,389.51/1,097,013.99 - Step 6: Final answer
x = 1,620,496.71
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.