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Finding the Fourth Proportional to 493,239.40, 739,057.20 and 446,000.20

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Solution

The fourth proportional to 493,239.40, 739,057.20 and 446,000.20 is: 668,275.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,239.40 : 739,057.20 = 446,000.20 : x
  2. Step 2: Convert to fraction form
    493,239.40/739,057.20 = 446,000.20/x
  3. Step 3: Cross multiply
    493,239.40x = 739,057.20 × 446,000.20
  4. Step 4: Simplify right side
    493,239.40x = 329,619,659,011.44
  5. Step 5: Solve for x
    x = 329,619,659,011.44/493,239.40
  6. Step 6: Final answer
    x = 668,275.20

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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.