Finding the Fourth Proportional to 3,998,472.12, 5,518,029.18 and 2,187,636.12
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Solution
The fourth proportional to 3,998,472.12, 5,518,029.18 and 2,187,636.12 is: 3,019,013.16
Step by Step Solution
- Step 1: Write the proportion equation
3,998,472.12 : 5,518,029.18 = 2,187,636.12 : x - Step 2: Convert to fraction form
3,998,472.12/5,518,029.18 = 2,187,636.12/x - Step 3: Cross multiply
3,998,472.12x = 5,518,029.18 × 2,187,636.12 - Step 4: Simplify right side
3,998,472.12x = 12,071,439,945,381.98 - Step 5: Solve for x
x = 12,071,439,945,381.98/3,998,472.12 - Step 6: Final answer
x = 3,019,013.16
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1.5x scale
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.