Finding the Fourth Proportional to 1,370,878.12, 2,057,645.58 and 661,405.12
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Solution
The fourth proportional to 1,370,878.12, 2,057,645.58 and 661,405.12 is: 992,748.59
Step by Step Solution
- Step 1: Write the proportion equation
1,370,878.12 : 2,057,645.58 = 661,405.12 : x - Step 2: Convert to fraction form
1,370,878.12/2,057,645.58 = 661,405.12/x - Step 3: Cross multiply
1,370,878.12x = 2,057,645.58 × 661,405.12 - Step 4: Simplify right side
1,370,878.12x = 1,360,937,321,757.37 - Step 5: Solve for x
x = 1,360,937,321,757.37/1,370,878.12 - Step 6: Final answer
x = 992,748.59
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.