Finding the Fourth Proportional to 438,449,440.38, 657,477,592.19 and 261,270,144.06
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Solution
The fourth proportional to 438,449,440.38, 657,477,592.19 and 261,270,144.06 is: 391,788,081.83
Step by Step Solution
- Step 1: Write the proportion equation
438,449,440.38 : 657,477,592.19 = 261,270,144.06 : x - Step 2: Convert to fraction form
438,449,440.38/657,477,592.19 = 261,270,144.06/x - Step 3: Cross multiply
438,449,440.38x = 657,477,592.19 × 261,270,144.06 - Step 4: Simplify right side
438,449,440.38x = 171,779,265,227,703,232 - Step 5: Solve for x
x = 171,779,265,227,703,232/438,449,440.38 - Step 6: Final answer
x = 391,788,081.83
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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.