Home / 905,021-1,358,103.28-505,923.56

Finding the Fourth Proportional to 905,021, 1,358,103.28 and 505,923.56

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Solution

The fourth proportional to 905,021, 1,358,103.28 and 505,923.56 is: 759,204.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,021 : 1,358,103.28 = 505,923.56 : x
  2. Step 2: Convert to fraction form
    905,021/1,358,103.28 = 505,923.56/x
  3. Step 3: Cross multiply
    905,021x = 1,358,103.28 × 505,923.56
  4. Step 4: Simplify right side
    905,021x = 687,096,446,265.28
  5. Step 5: Solve for x
    x = 687,096,446,265.28/905,021
  6. Step 6: Final answer
    x = 759,204.98

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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.