Finding the Fourth Proportional to 742,215, 1,113,367.40 and 209,775.84
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Solution
The fourth proportional to 742,215, 1,113,367.40 and 209,775.84 is: 314,676.45
Step by Step Solution
- Step 1: Write the proportion equation
742,215 : 1,113,367.40 = 209,775.84 : x - Step 2: Convert to fraction form
742,215/1,113,367.40 = 209,775.84/x - Step 3: Cross multiply
742,215x = 1,113,367.40 × 209,775.84 - Step 4: Simplify right side
742,215x = 233,557,581,563.62 - Step 5: Solve for x
x = 233,557,581,563.62/742,215 - Step 6: Final answer
x = 314,676.45
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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.