Home / 519,838.56-779,785.38-145,890.72

Finding the Fourth Proportional to 519,838.56, 779,785.38 and 145,890.72

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Solution

The fourth proportional to 519,838.56, 779,785.38 and 145,890.72 is: 218,843.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,838.56 : 779,785.38 = 145,890.72 : x
  2. Step 2: Convert to fraction form
    519,838.56/779,785.38 = 145,890.72/x
  3. Step 3: Cross multiply
    519,838.56x = 779,785.38 × 145,890.72
  4. Step 4: Simplify right side
    519,838.56x = 113,763,450,533.67
  5. Step 5: Solve for x
    x = 113,763,450,533.67/519,838.56
  6. Step 6: Final answer
    x = 218,843.81

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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.