Finding the Fourth Proportional to 742,638.37, 1,112,959.74 and 405,173.34
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Solution
The fourth proportional to 742,638.37, 1,112,959.74 and 405,173.34 is: 607,215.62
Step by Step Solution
- Step 1: Write the proportion equation
742,638.37 : 1,112,959.74 = 405,173.34 : x - Step 2: Convert to fraction form
742,638.37/1,112,959.74 = 405,173.34/x - Step 3: Cross multiply
742,638.37x = 1,112,959.74 × 405,173.34 - Step 4: Simplify right side
742,638.37x = 450,941,615,141.33 - Step 5: Solve for x
x = 450,941,615,141.33/742,638.37 - Step 6: Final answer
x = 607,215.62
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.