Finding the Fourth Proportional to 961,786.40, 1,328,394.53 and 768,862.23
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Solution
The fourth proportional to 961,786.40, 1,328,394.53 and 768,862.23 is: 1,061,932.65
Step by Step Solution
- Step 1: Write the proportion equation
961,786.40 : 1,328,394.53 = 768,862.23 : x - Step 2: Convert to fraction form
961,786.40/1,328,394.53 = 768,862.23/x - Step 3: Cross multiply
961,786.40x = 1,328,394.53 × 768,862.23 - Step 4: Simplify right side
961,786.40x = 1,021,352,376,811.29 - Step 5: Solve for x
x = 1,021,352,376,811.29/961,786.40 - Step 6: Final answer
x = 1,061,932.65
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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.