Finding the Fourth Proportional to 419,097,905.20, 628,646,857.80 and 127,964,465.20
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Solution
The fourth proportional to 419,097,905.20, 628,646,857.80 and 127,964,465.20 is: 191,946,697.80
Step by Step Solution
- Step 1: Write the proportion equation
419,097,905.20 : 628,646,857.80 = 127,964,465.20 : x - Step 2: Convert to fraction form
419,097,905.20/628,646,857.80 = 127,964,465.20/x - Step 3: Cross multiply
419,097,905.20x = 628,646,857.80 × 127,964,465.20 - Step 4: Simplify right side
419,097,905.20x = 80,444,458,958,037,440 - Step 5: Solve for x
x = 80,444,458,958,037,440/419,097,905.20 - Step 6: Final answer
x = 191,946,697.80
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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.