Finding the Fourth Proportional to 1,339,640.90, 2,009,461.35 and 1,330,309.70
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Solution
The fourth proportional to 1,339,640.90, 2,009,461.35 and 1,330,309.70 is: 1,995,464.55
Step by Step Solution
- Step 1: Write the proportion equation
1,339,640.90 : 2,009,461.35 = 1,330,309.70 : x - Step 2: Convert to fraction form
1,339,640.90/2,009,461.35 = 1,330,309.70/x - Step 3: Cross multiply
1,339,640.90x = 2,009,461.35 × 1,330,309.70 - Step 4: Simplify right side
1,339,640.90x = 2,673,205,925,680.10 - Step 5: Solve for x
x = 2,673,205,925,680.10/1,339,640.90 - Step 6: Final answer
x = 1,995,464.55
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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.