Finding the Fourth Proportional to 1,390,247.70, 2,085,371.55 and 1,091,649.30
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Solution
The fourth proportional to 1,390,247.70, 2,085,371.55 and 1,091,649.30 is: 1,637,473.95
Step by Step Solution
- Step 1: Write the proportion equation
1,390,247.70 : 2,085,371.55 = 1,091,649.30 : x - Step 2: Convert to fraction form
1,390,247.70/2,085,371.55 = 1,091,649.30/x - Step 3: Cross multiply
1,390,247.70x = 2,085,371.55 × 1,091,649.30 - Step 4: Simplify right side
1,390,247.70x = 2,276,494,392,797.42 - Step 5: Solve for x
x = 2,276,494,392,797.42/1,390,247.70 - Step 6: Final answer
x = 1,637,473.95
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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.