Finding the Fourth Proportional to 989,638.40, 1,483,291.20 and 740,028.80
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Solution
The fourth proportional to 989,638.40, 1,483,291.20 and 740,028.80 is: 1,109,170.99
Step by Step Solution
- Step 1: Write the proportion equation
989,638.40 : 1,483,291.20 = 740,028.80 : x - Step 2: Convert to fraction form
989,638.40/1,483,291.20 = 740,028.80/x - Step 3: Cross multiply
989,638.40x = 1,483,291.20 × 740,028.80 - Step 4: Simplify right side
989,638.40x = 1,097,678,206,786.56 - Step 5: Solve for x
x = 1,097,678,206,786.56/989,638.40 - Step 6: Final answer
x = 1,109,170.99
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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.