Finding the Fourth Proportional to 3,940,970.14, 5,438,535.78 and 2,130,134.14
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Solution
The fourth proportional to 3,940,970.14, 5,438,535.78 and 2,130,134.14 is: 2,939,583.48
Step by Step Solution
- Step 1: Write the proportion equation
3,940,970.14 : 5,438,535.78 = 2,130,134.14 : x - Step 2: Convert to fraction form
3,940,970.14/5,438,535.78 = 2,130,134.14/x - Step 3: Cross multiply
3,940,970.14x = 5,438,535.78 × 2,130,134.14 - Step 4: Simplify right side
3,940,970.14x = 11,584,810,736,589.53 - Step 5: Solve for x
x = 11,584,810,736,589.53/3,940,970.14 - Step 6: Final answer
x = 2,939,583.48
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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.