Finding the Fourth Proportional to 1,286,885.71, 1,775,370.09 and 742,635.40
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Solution
The fourth proportional to 1,286,885.71, 1,775,370.09 and 742,635.40 is: 1,024,529.74
Step by Step Solution
- Step 1: Write the proportion equation
1,286,885.71 : 1,775,370.09 = 742,635.40 : x - Step 2: Convert to fraction form
1,286,885.71/1,775,370.09 = 742,635.40/x - Step 3: Cross multiply
1,286,885.71x = 1,775,370.09 × 742,635.40 - Step 4: Simplify right side
1,286,885.71x = 1,318,452,676,935.19 - Step 5: Solve for x
x = 1,318,452,676,935.19/1,286,885.71 - Step 6: Final answer
x = 1,024,529.74
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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.