Finding the Fourth Proportional to 2,153,964.62, 2,972,977.69 and 1,338,783.94
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Solution
The fourth proportional to 2,153,964.62, 2,972,977.69 and 1,338,783.94 is: 1,847,836.66
Step by Step Solution
- Step 1: Write the proportion equation
2,153,964.62 : 2,972,977.69 = 1,338,783.94 : x - Step 2: Convert to fraction form
2,153,964.62/2,972,977.69 = 1,338,783.94/x - Step 3: Cross multiply
2,153,964.62x = 2,972,977.69 × 1,338,783.94 - Step 4: Simplify right side
2,153,964.62x = 3,980,174,785,350.30 - Step 5: Solve for x
x = 3,980,174,785,350.30/2,153,964.62 - Step 6: Final answer
x = 1,847,836.66
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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.