Finding the Fourth Proportional to 1,987,986.36, 2,981,680.56 and 639,970.68
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Solution
The fourth proportional to 1,987,986.36, 2,981,680.56 and 639,970.68 is: 959,859.77
Step by Step Solution
- Step 1: Write the proportion equation
1,987,986.36 : 2,981,680.56 = 639,970.68 : x - Step 2: Convert to fraction form
1,987,986.36/2,981,680.56 = 639,970.68/x - Step 3: Cross multiply
1,987,986.36x = 2,981,680.56 × 639,970.68 - Step 4: Simplify right side
1,987,986.36x = 1,908,188,135,525.98 - Step 5: Solve for x
x = 1,908,188,135,525.98/1,987,986.36 - Step 6: Final answer
x = 959,859.77
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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.