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Finding the Fourth Proportional to 664,079.80, 996,249.30 and 284,999.80

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Solution

The fourth proportional to 664,079.80, 996,249.30 and 284,999.80 is: 427,555.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,079.80 : 996,249.30 = 284,999.80 : x
  2. Step 2: Convert to fraction form
    664,079.80/996,249.30 = 284,999.80/x
  3. Step 3: Cross multiply
    664,079.80x = 996,249.30 × 284,999.80
  4. Step 4: Simplify right side
    664,079.80x = 283,930,851,250.14
  5. Step 5: Solve for x
    x = 283,930,851,250.14/664,079.80
  6. Step 6: Final answer
    x = 427,555.32

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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.