Finding the Fourth Proportional to 2,143,178.16, 2,957,581.94 and 1,225,424.54
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Solution
The fourth proportional to 2,143,178.16, 2,957,581.94 and 1,225,424.54 is: 1,691,083.61
Step by Step Solution
- Step 1: Write the proportion equation
2,143,178.16 : 2,957,581.94 = 1,225,424.54 : x - Step 2: Convert to fraction form
2,143,178.16/2,957,581.94 = 1,225,424.54/x - Step 3: Cross multiply
2,143,178.16x = 2,957,581.94 × 1,225,424.54 - Step 4: Simplify right side
2,143,178.16x = 3,624,293,467,421.78 - Step 5: Solve for x
x = 3,624,293,467,421.78/2,143,178.16 - Step 6: Final answer
x = 1,691,083.61
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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.