Finding the Fourth Proportional to 1,419,006.70, 2,128,510.05 and 1,391,013.10
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Solution
The fourth proportional to 1,419,006.70, 2,128,510.05 and 1,391,013.10 is: 2,086,519.65
Step by Step Solution
- Step 1: Write the proportion equation
1,419,006.70 : 2,128,510.05 = 1,391,013.10 : x - Step 2: Convert to fraction form
1,419,006.70/2,128,510.05 = 1,391,013.10/x - Step 3: Cross multiply
1,419,006.70x = 2,128,510.05 × 1,391,013.10 - Step 4: Simplify right side
1,419,006.70x = 2,960,785,363,031.66 - Step 5: Solve for x
x = 2,960,785,363,031.66/1,419,006.70 - Step 6: Final answer
x = 2,086,519.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.