Finding the Fourth Proportional to 3,551,659.40, 5,328,266.70 and 1,421,208.20
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Solution
The fourth proportional to 3,551,659.40, 5,328,266.70 and 1,421,208.20 is: 2,132,123.46
Step by Step Solution
- Step 1: Write the proportion equation
3,551,659.40 : 5,328,266.70 = 1,421,208.20 : x - Step 2: Convert to fraction form
3,551,659.40/5,328,266.70 = 1,421,208.20/x - Step 3: Cross multiply
3,551,659.40x = 5,328,266.70 × 1,421,208.20 - Step 4: Simplify right side
3,551,659.40x = 7,572,576,325,826.94 - Step 5: Solve for x
x = 7,572,576,325,826.94/3,551,659.40 - Step 6: Final answer
x = 2,132,123.46
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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.