Finding the Fourth Proportional to 1,121,121.41, 1,547,183.57 and 637,674.12
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Solution
The fourth proportional to 1,121,121.41, 1,547,183.57 and 637,674.12 is: 880,010.78
Step by Step Solution
- Step 1: Write the proportion equation
1,121,121.41 : 1,547,183.57 = 637,674.12 : x - Step 2: Convert to fraction form
1,121,121.41/1,547,183.57 = 637,674.12/x - Step 3: Cross multiply
1,121,121.41x = 1,547,183.57 × 637,674.12 - Step 4: Simplify right side
1,121,121.41x = 986,598,918,289.84 - Step 5: Solve for x
x = 986,598,918,289.84/1,121,121.41 - Step 6: Final answer
x = 880,010.78
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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.