Home / 499,819.27-689,033.19-356,330.20

Finding the Fourth Proportional to 499,819.27, 689,033.19 and 356,330.20

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Solution

The fourth proportional to 499,819.27, 689,033.19 and 356,330.20 is: 491,224.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,819.27 : 689,033.19 = 356,330.20 : x
  2. Step 2: Convert to fraction form
    499,819.27/689,033.19 = 356,330.20/x
  3. Step 3: Cross multiply
    499,819.27x = 689,033.19 × 356,330.20
  4. Step 4: Simplify right side
    499,819.27x = 245,523,334,399.34
  5. Step 5: Solve for x
    x = 245,523,334,399.34/499,819.27
  6. Step 6: Final answer
    x = 491,224.23

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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.