Finding the Fourth Proportional to 1,391,748.06, 1,920,581.09 and 810,934.99
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Solution
The fourth proportional to 1,391,748.06, 1,920,581.09 and 810,934.99 is: 1,119,072.09
Step by Step Solution
- Step 1: Write the proportion equation
1,391,748.06 : 1,920,581.09 = 810,934.99 : x - Step 2: Convert to fraction form
1,391,748.06/1,920,581.09 = 810,934.99/x - Step 3: Cross multiply
1,391,748.06x = 1,920,581.09 × 810,934.99 - Step 4: Simplify right side
1,391,748.06x = 1,557,466,402,958.66 - Step 5: Solve for x
x = 1,557,466,402,958.66/1,391,748.06 - Step 6: Final answer
x = 1,119,072.09
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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.