Home / 426,927.45-640,296.84-123,255.64

Finding the Fourth Proportional to 426,927.45, 640,296.84 and 123,255.64

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Solution

The fourth proportional to 426,927.45, 640,296.84 and 123,255.64 is: 184,856.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,927.45 : 640,296.84 = 123,255.64 : x
  2. Step 2: Convert to fraction form
    426,927.45/640,296.84 = 123,255.64/x
  3. Step 3: Cross multiply
    426,927.45x = 640,296.84 × 123,255.64
  4. Step 4: Simplify right side
    426,927.45x = 78,920,195,665.64
  5. Step 5: Solve for x
    x = 78,920,195,665.64/426,927.45
  6. Step 6: Final answer
    x = 184,856.22

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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.