Finding the Fourth Proportional to 1,618,807.20, 2,430,349.20 and 1,299,135.84
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Solution
The fourth proportional to 1,618,807.20, 2,430,349.20 and 1,299,135.84 is: 1,950,419.88
Step by Step Solution
- Step 1: Write the proportion equation
1,618,807.20 : 2,430,349.20 = 1,299,135.84 : x - Step 2: Convert to fraction form
1,618,807.20/2,430,349.20 = 1,299,135.84/x - Step 3: Cross multiply
1,618,807.20x = 2,430,349.20 × 1,299,135.84 - Step 4: Simplify right side
1,618,807.20x = 3,157,353,749,435.33 - Step 5: Solve for x
x = 3,157,353,749,435.33/1,618,807.20 - Step 6: Final answer
x = 1,950,419.88
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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.