Home / 426,919.38-640,284.75-123,247.54

Finding the Fourth Proportional to 426,919.38, 640,284.75 and 123,247.54

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Solution

The fourth proportional to 426,919.38, 640,284.75 and 123,247.54 is: 184,844.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,919.38 : 640,284.75 = 123,247.54 : x
  2. Step 2: Convert to fraction form
    426,919.38/640,284.75 = 123,247.54/x
  3. Step 3: Cross multiply
    426,919.38x = 640,284.75 × 123,247.54
  4. Step 4: Simplify right side
    426,919.38x = 78,913,520,337.02
  5. Step 5: Solve for x
    x = 78,913,520,337.02/426,919.38
  6. Step 6: Final answer
    x = 184,844.08

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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.