Finding the Fourth Proportional to 1,489,598.70, 2,235,321.45 and 780,135.90
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Solution
The fourth proportional to 1,489,598.70, 2,235,321.45 and 780,135.90 is: 1,170,687.46
Step by Step Solution
- Step 1: Write the proportion equation
1,489,598.70 : 2,235,321.45 = 780,135.90 : x - Step 2: Convert to fraction form
1,489,598.70/2,235,321.45 = 780,135.90/x - Step 3: Cross multiply
1,489,598.70x = 2,235,321.45 × 780,135.90 - Step 4: Simplify right side
1,489,598.70x = 1,743,854,511,185.06 - Step 5: Solve for x
x = 1,743,854,511,185.06/1,489,598.70 - Step 6: Final answer
x = 1,170,687.46
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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.