Finding the Fourth Proportional to 3,939,785.49, 5,436,987.02 and 2,220,906
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Solution
The fourth proportional to 3,939,785.49, 5,436,987.02 and 2,220,906 is: 3,064,897.09
Step by Step Solution
- Step 1: Write the proportion equation
3,939,785.49 : 5,436,987.02 = 2,220,906 : x - Step 2: Convert to fraction form
3,939,785.49/5,436,987.02 = 2,220,906/x - Step 3: Cross multiply
3,939,785.49x = 5,436,987.02 × 2,220,906 - Step 4: Simplify right side
3,939,785.49x = 12,075,037,094,640.12 - Step 5: Solve for x
x = 12,075,037,094,640.12/3,939,785.49 - Step 6: Final answer
x = 3,064,897.09
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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.