Finding the Fourth Proportional to 919,307,841.12, 1,378,952,673.84 and 421,177,059.36
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Solution
The fourth proportional to 919,307,841.12, 1,378,952,673.84 and 421,177,059.36 is: 631,761,425.48
Step by Step Solution
- Step 1: Write the proportion equation
919,307,841.12 : 1,378,952,673.84 = 421,177,059.36 : x - Step 2: Convert to fraction form
919,307,841.12/1,378,952,673.84 = 421,177,059.36/x - Step 3: Cross multiply
919,307,841.12x = 1,378,952,673.84 × 421,177,059.36 - Step 4: Simplify right side
919,307,841.12x = 580,783,232,164,540,416 - Step 5: Solve for x
x = 580,783,232,164,540,416/919,307,841.12 - Step 6: Final answer
x = 631,761,425.48
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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.