Finding the Fourth Proportional to 399,408,107.20, 599,112,160.80 and 399,408,107.20
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Solution
The fourth proportional to 399,408,107.20, 599,112,160.80 and 399,408,107.20 is: 599,112,160.80
Step by Step Solution
- Step 1: Write the proportion equation
399,408,107.20 : 599,112,160.80 = 399,408,107.20 : x - Step 2: Convert to fraction form
399,408,107.20/599,112,160.80 = 399,408,107.20/x - Step 3: Cross multiply
399,408,107.20x = 599,112,160.80 × 399,408,107.20 - Step 4: Simplify right side
399,408,107.20x = 239,290,254,145,630,016 - Step 5: Solve for x
x = 239,290,254,145,630,016/399,408,107.20 - Step 6: Final answer
x = 599,112,160.80
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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.