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Finding the Fourth Proportional to 422,719.04, 629,961.22 and 409,903.04

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Solution

The fourth proportional to 422,719.04, 629,961.22 and 409,903.04 is: 610,862.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,719.04 : 629,961.22 = 409,903.04 : x
  2. Step 2: Convert to fraction form
    422,719.04/629,961.22 = 409,903.04/x
  3. Step 3: Cross multiply
    422,719.04x = 629,961.22 × 409,903.04
  4. Step 4: Simplify right side
    422,719.04x = 258,223,019,160.11
  5. Step 5: Solve for x
    x = 258,223,019,160.11/422,719.04
  6. Step 6: Final answer
    x = 610,862.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.