Finding the Fourth Proportional to 1,915,128.99, 2,642,824.94 and 1,055,689.02
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Solution
The fourth proportional to 1,915,128.99, 2,642,824.94 and 1,055,689.02 is: 1,456,821.59
Step by Step Solution
- Step 1: Write the proportion equation
1,915,128.99 : 2,642,824.94 = 1,055,689.02 : x - Step 2: Convert to fraction form
1,915,128.99/2,642,824.94 = 1,055,689.02/x - Step 3: Cross multiply
1,915,128.99x = 2,642,824.94 × 1,055,689.02 - Step 4: Simplify right side
1,915,128.99x = 2,790,001,265,661.71 - Step 5: Solve for x
x = 2,790,001,265,661.71/1,915,128.99 - Step 6: Final answer
x = 1,456,821.59
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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.