Finding the Fourth Proportional to 1,330,378.70, 1,995,373.65 and 383,650.70
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Solution
The fourth proportional to 1,330,378.70, 1,995,373.65 and 383,650.70 is: 575,419.99
Step by Step Solution
- Step 1: Write the proportion equation
1,330,378.70 : 1,995,373.65 = 383,650.70 : x - Step 2: Convert to fraction form
1,330,378.70/1,995,373.65 = 383,650.70/x - Step 3: Cross multiply
1,330,378.70x = 1,995,373.65 × 383,650.70 - Step 4: Simplify right side
1,330,378.70x = 765,526,497,584.06 - Step 5: Solve for x
x = 765,526,497,584.06/1,330,378.70 - Step 6: Final answer
x = 575,419.99
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1.5x scale
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.