Finding the Fourth Proportional to 638,649,874.07, 957,970,791.09 and 343,683,936.49
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Solution
The fourth proportional to 638,649,874.07, 957,970,791.09 and 343,683,936.49 is: 515,523,741.39
Step by Step Solution
- Step 1: Write the proportion equation
638,649,874.07 : 957,970,791.09 = 343,683,936.49 : x - Step 2: Convert to fraction form
638,649,874.07/957,970,791.09 = 343,683,936.49/x - Step 3: Cross multiply
638,649,874.07x = 957,970,791.09 × 343,683,936.49 - Step 4: Simplify right side
638,649,874.07x = 329,239,172,520,974,400 - Step 5: Solve for x
x = 329,239,172,520,974,400/638,649,874.07 - Step 6: Final answer
x = 515,523,741.39
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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.