Finding the Fourth Proportional to 1,609,720.65, 2,221,368.17 and 911,936.43
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Solution
The fourth proportional to 1,609,720.65, 2,221,368.17 and 911,936.43 is: 1,258,446.03
Step by Step Solution
- Step 1: Write the proportion equation
1,609,720.65 : 2,221,368.17 = 911,936.43 : x - Step 2: Convert to fraction form
1,609,720.65/2,221,368.17 = 911,936.43/x - Step 3: Cross multiply
1,609,720.65x = 2,221,368.17 × 911,936.43 - Step 4: Simplify right side
1,609,720.65x = 2,025,746,554,105.75 - Step 5: Solve for x
x = 2,025,746,554,105.75/1,609,720.65 - Step 6: Final answer
x = 1,258,446.03
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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.