Finding the Fourth Proportional to 393,391,729.98, 542,951,648.64 and 234,632,029.68
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Solution
The fourth proportional to 393,391,729.98, 542,951,648.64 and 234,632,029.68 is: 323,834,584.28
Step by Step Solution
- Step 1: Write the proportion equation
393,391,729.98 : 542,951,648.64 = 234,632,029.68 : x - Step 2: Convert to fraction form
393,391,729.98/542,951,648.64 = 234,632,029.68/x - Step 3: Cross multiply
393,391,729.98x = 542,951,648.64 × 234,632,029.68 - Step 4: Simplify right side
393,391,729.98x = 127,393,847,338,505,408 - Step 5: Solve for x
x = 127,393,847,338,505,408/393,391,729.98 - Step 6: Final answer
x = 323,834,584.28
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.