Finding the Fourth Proportional to 1,307,493.28, 1,800,169.68 and 1,115,737.12
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Solution
The fourth proportional to 1,307,493.28, 1,800,169.68 and 1,115,737.12 is: 1,536,157.90
Step by Step Solution
- Step 1: Write the proportion equation
1,307,493.28 : 1,800,169.68 = 1,115,737.12 : x - Step 2: Convert to fraction form
1,307,493.28/1,800,169.68 = 1,115,737.12/x - Step 3: Cross multiply
1,307,493.28x = 1,800,169.68 × 1,115,737.12 - Step 4: Simplify right side
1,307,493.28x = 2,008,516,134,274.52 - Step 5: Solve for x
x = 2,008,516,134,274.52/1,307,493.28 - Step 6: Final answer
x = 1,536,157.90
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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.