Home / 426,929.24-640,299.53-123,257.42

Finding the Fourth Proportional to 426,929.24, 640,299.53 and 123,257.42

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Solution

The fourth proportional to 426,929.24, 640,299.53 and 123,257.42 is: 184,858.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,929.24 : 640,299.53 = 123,257.42 : x
  2. Step 2: Convert to fraction form
    426,929.24/640,299.53 = 123,257.42/x
  3. Step 3: Cross multiply
    426,929.24x = 640,299.53 × 123,257.42
  4. Step 4: Simplify right side
    426,929.24x = 78,921,667,602.78
  5. Step 5: Solve for x
    x = 78,921,667,602.78/426,929.24
  6. Step 6: Final answer
    x = 184,858.89

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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.