Finding the Fourth Proportional to 1,286,374.55, 1,774,912.94 and 742,394.75
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Solution
The fourth proportional to 1,286,374.55, 1,774,912.94 and 742,394.75 is: 1,024,340.88
Step by Step Solution
- Step 1: Write the proportion equation
1,286,374.55 : 1,774,912.94 = 742,394.75 : x - Step 2: Convert to fraction form
1,286,374.55/1,774,912.94 = 742,394.75/x - Step 3: Cross multiply
1,286,374.55x = 1,774,912.94 × 742,394.75 - Step 4: Simplify right side
1,286,374.55x = 1,317,686,038,560.51 - Step 5: Solve for x
x = 1,317,686,038,560.51/1,286,374.55 - Step 6: Final answer
x = 1,024,340.88
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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.