Finding the Fourth Proportional to 2,115,553.49, 2,919,381.97 and 1,148,661.66
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Solution
The fourth proportional to 2,115,553.49, 2,919,381.97 and 1,148,661.66 is: 1,585,108.65
Step by Step Solution
- Step 1: Write the proportion equation
2,115,553.49 : 2,919,381.97 = 1,148,661.66 : x - Step 2: Convert to fraction form
2,115,553.49/2,919,381.97 = 1,148,661.66/x - Step 3: Cross multiply
2,115,553.49x = 2,919,381.97 × 1,148,661.66 - Step 4: Simplify right side
2,115,553.49x = 3,353,382,139,834.27 - Step 5: Solve for x
x = 3,353,382,139,834.27/2,115,553.49 - Step 6: Final answer
x = 1,585,108.65
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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.