Finding the Fourth Proportional to 1,421,169.45, 1,961,218.99 and 776,589.69
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Solution
The fourth proportional to 1,421,169.45, 1,961,218.99 and 776,589.69 is: 1,071,696.59
Step by Step Solution
- Step 1: Write the proportion equation
1,421,169.45 : 1,961,218.99 = 776,589.69 : x - Step 2: Convert to fraction form
1,421,169.45/1,961,218.99 = 776,589.69/x - Step 3: Cross multiply
1,421,169.45x = 1,961,218.99 × 776,589.69 - Step 4: Simplify right side
1,421,169.45x = 1,523,062,447,466.21 - Step 5: Solve for x
x = 1,523,062,447,466.21/1,421,169.45 - Step 6: Final answer
x = 1,071,696.59
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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.