Finding the Fourth Proportional to 2,129,624.92, 2,939,140.20 and 1,212,077.26
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Solution
The fourth proportional to 2,129,624.92, 2,939,140.20 and 1,212,077.26 is: 1,672,813.35
Step by Step Solution
- Step 1: Write the proportion equation
2,129,624.92 : 2,939,140.20 = 1,212,077.26 : x - Step 2: Convert to fraction form
2,129,624.92/2,939,140.20 = 1,212,077.26/x - Step 3: Cross multiply
2,129,624.92x = 2,939,140.20 × 1,212,077.26 - Step 4: Simplify right side
2,129,624.92x = 3,562,465,000,371.85 - Step 5: Solve for x
x = 3,562,465,000,371.85/2,129,624.92 - Step 6: Final answer
x = 1,672,813.35
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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.