Finding the Fourth Proportional to 1,286,132.22, 1,774,734.57 and 742,443.12
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Solution
The fourth proportional to 1,286,132.22, 1,774,734.57 and 742,443.12 is: 1,024,497.68
Step by Step Solution
- Step 1: Write the proportion equation
1,286,132.22 : 1,774,734.57 = 742,443.12 : x - Step 2: Convert to fraction form
1,286,132.22/1,774,734.57 = 742,443.12/x - Step 3: Cross multiply
1,286,132.22x = 1,774,734.57 × 742,443.12 - Step 4: Simplify right side
1,286,132.22x = 1,317,639,471,322.66 - Step 5: Solve for x
x = 1,317,639,471,322.66/1,286,132.22 - Step 6: Final answer
x = 1,024,497.68
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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.