Finding the Fourth Proportional to 2,153,872.62, 2,972,363.85 and 1,187,037.99
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Solution
The fourth proportional to 2,153,872.62, 2,972,363.85 and 1,187,037.99 is: 1,638,123.25
Step by Step Solution
- Step 1: Write the proportion equation
2,153,872.62 : 2,972,363.85 = 1,187,037.99 : x - Step 2: Convert to fraction form
2,153,872.62/2,972,363.85 = 1,187,037.99/x - Step 3: Cross multiply
2,153,872.62x = 2,972,363.85 × 1,187,037.99 - Step 4: Simplify right side
2,153,872.62x = 3,528,308,810,052.66 - Step 5: Solve for x
x = 3,528,308,810,052.66/2,153,872.62 - Step 6: Final answer
x = 1,638,123.25
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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.