Finding the Fourth Proportional to 1,987,988.36, 2,981,683.56 and 639,972.68
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Solution
The fourth proportional to 1,987,988.36, 2,981,683.56 and 639,972.68 is: 959,862.77
Step by Step Solution
- Step 1: Write the proportion equation
1,987,988.36 : 2,981,683.56 = 639,972.68 : x - Step 2: Convert to fraction form
1,987,988.36/2,981,683.56 = 639,972.68/x - Step 3: Cross multiply
1,987,988.36x = 2,981,683.56 × 639,972.68 - Step 4: Simplify right side
1,987,988.36x = 1,908,196,018,805.14 - Step 5: Solve for x
x = 1,908,196,018,805.14/1,987,988.36 - Step 6: Final answer
x = 959,862.77
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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.