Finding the Fourth Proportional to 553,904,410.72, 764,340,469.68 and 306,324,139.36
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Solution
The fourth proportional to 553,904,410.72, 764,340,469.68 and 306,324,139.36 is: 422,700,978.76
Step by Step Solution
- Step 1: Write the proportion equation
553,904,410.72 : 764,340,469.68 = 306,324,139.36 : x - Step 2: Convert to fraction form
553,904,410.72/764,340,469.68 = 306,324,139.36/x - Step 3: Cross multiply
553,904,410.72x = 764,340,469.68 × 306,324,139.36 - Step 4: Simplify right side
553,904,410.72x = 234,135,936,552,744,160 - Step 5: Solve for x
x = 234,135,936,552,744,160/553,904,410.72 - Step 6: Final answer
x = 422,700,978.76
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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.