Home / 379,368.06-522,919.86-256,821.79

Finding the Fourth Proportional to 379,368.06, 522,919.86 and 256,821.79

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Solution

The fourth proportional to 379,368.06, 522,919.86 and 256,821.79 is: 354,002.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,368.06 : 522,919.86 = 256,821.79 : x
  2. Step 2: Convert to fraction form
    379,368.06/522,919.86 = 256,821.79/x
  3. Step 3: Cross multiply
    379,368.06x = 522,919.86 × 256,821.79
  4. Step 4: Simplify right side
    379,368.06x = 134,297,214,471.75
  5. Step 5: Solve for x
    x = 134,297,214,471.75/379,368.06
  6. Step 6: Final answer
    x = 354,002.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.