Finding the Fourth Proportional to 1,189,013.99, 1,783,514.70 and 290,460.74
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Solution
The fourth proportional to 1,189,013.99, 1,783,514.70 and 290,460.74 is: 435,689.57
Step by Step Solution
- Step 1: Write the proportion equation
1,189,013.99 : 1,783,514.70 = 290,460.74 : x - Step 2: Convert to fraction form
1,189,013.99/1,783,514.70 = 290,460.74/x - Step 3: Cross multiply
1,189,013.99x = 1,783,514.70 × 290,460.74 - Step 4: Simplify right side
1,189,013.99x = 518,040,990,645.30 - Step 5: Solve for x
x = 518,040,990,645.30/1,189,013.99 - Step 6: Final answer
x = 435,689.57
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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.