Home / 494,780.58-742,219.47-139,797.36

Finding the Fourth Proportional to 494,780.58, 742,219.47 and 139,797.36

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Solution

The fourth proportional to 494,780.58, 742,219.47 and 139,797.36 is: 209,709.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,780.58 : 742,219.47 = 139,797.36 : x
  2. Step 2: Convert to fraction form
    494,780.58/742,219.47 = 139,797.36/x
  3. Step 3: Cross multiply
    494,780.58x = 742,219.47 × 139,797.36
  4. Step 4: Simplify right side
    494,780.58x = 103,760,322,446.60
  5. Step 5: Solve for x
    x = 103,760,322,446.60/494,780.58
  6. Step 6: Final answer
    x = 209,709.77

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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.