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Finding the Fourth Proportional to 496,821.80, 745,232.70 and 445,500.20

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Solution

The fourth proportional to 496,821.80, 745,232.70 and 445,500.20 is: 668,250.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,821.80 : 745,232.70 = 445,500.20 : x
  2. Step 2: Convert to fraction form
    496,821.80/745,232.70 = 445,500.20/x
  3. Step 3: Cross multiply
    496,821.80x = 745,232.70 × 445,500.20
  4. Step 4: Simplify right side
    496,821.80x = 332,001,316,896.54
  5. Step 5: Solve for x
    x = 332,001,316,896.54/496,821.80
  6. Step 6: Final answer
    x = 668,250.30

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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.