Home / 885,857.78-1,328,997.85-286,819.11

Finding the Fourth Proportional to 885,857.78, 1,328,997.85 and 286,819.11

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Solution

The fourth proportional to 885,857.78, 1,328,997.85 and 286,819.11 is: 430,297.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,857.78 : 1,328,997.85 = 286,819.11 : x
  2. Step 2: Convert to fraction form
    885,857.78/1,328,997.85 = 286,819.11/x
  3. Step 3: Cross multiply
    885,857.78x = 1,328,997.85 × 286,819.11
  4. Step 4: Simplify right side
    885,857.78x = 381,181,979,811.87
  5. Step 5: Solve for x
    x = 381,181,979,811.87/885,857.78
  6. Step 6: Final answer
    x = 430,297.04

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1.5x scale

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.