Finding the Fourth Proportional to 1,121,125.91, 1,547,189.78 and 637,678.62
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Solution
The fourth proportional to 1,121,125.91, 1,547,189.78 and 637,678.62 is: 880,016.99
Step by Step Solution
- Step 1: Write the proportion equation
1,121,125.91 : 1,547,189.78 = 637,678.62 : x - Step 2: Convert to fraction form
1,121,125.91/1,547,189.78 = 637,678.62/x - Step 3: Cross multiply
1,121,125.91x = 1,547,189.78 × 637,678.62 - Step 4: Simplify right side
1,121,125.91x = 986,609,840,600.11 - Step 5: Solve for x
x = 986,609,840,600.11/1,121,125.91 - Step 6: Final answer
x = 880,016.99
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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.