Finding the Fourth Proportional to 2,154,124.11, 2,972,709.36 and 1,187,256.87
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Solution
The fourth proportional to 2,154,124.11, 2,972,709.36 and 1,187,256.87 is: 1,638,424.45
Step by Step Solution
- Step 1: Write the proportion equation
2,154,124.11 : 2,972,709.36 = 1,187,256.87 : x - Step 2: Convert to fraction form
2,154,124.11/2,972,709.36 = 1,187,256.87/x - Step 3: Cross multiply
2,154,124.11x = 2,972,709.36 × 1,187,256.87 - Step 4: Simplify right side
2,154,124.11x = 3,529,369,610,173.30 - Step 5: Solve for x
x = 3,529,369,610,173.30/2,154,124.11 - Step 6: Final answer
x = 1,638,424.45
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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.