Finding the Fourth Proportional to 2,116,228.51, 2,920,416.42 and 1,149,377.68
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Solution
The fourth proportional to 2,116,228.51, 2,920,416.42 and 1,149,377.68 is: 1,586,152.65
Step by Step Solution
- Step 1: Write the proportion equation
2,116,228.51 : 2,920,416.42 = 1,149,377.68 : x - Step 2: Convert to fraction form
2,116,228.51/2,920,416.42 = 1,149,377.68/x - Step 3: Cross multiply
2,116,228.51x = 2,920,416.42 × 1,149,377.68 - Step 4: Simplify right side
2,116,228.51x = 3,356,661,449,453.51 - Step 5: Solve for x
x = 3,356,661,449,453.51/2,116,228.51 - Step 6: Final answer
x = 1,586,152.65
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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.