Finding the Fourth Proportional to 1,126,486.16, 1,689,700.08 and 378,532.16
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Solution
The fourth proportional to 1,126,486.16, 1,689,700.08 and 378,532.16 is: 567,788.44
Step by Step Solution
- Step 1: Write the proportion equation
1,126,486.16 : 1,689,700.08 = 378,532.16 : x - Step 2: Convert to fraction form
1,126,486.16/1,689,700.08 = 378,532.16/x - Step 3: Cross multiply
1,126,486.16x = 1,689,700.08 × 378,532.16 - Step 4: Simplify right side
1,126,486.16x = 639,605,821,034.57 - Step 5: Solve for x
x = 639,605,821,034.57/1,126,486.16 - Step 6: Final answer
x = 567,788.44
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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.