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Finding the Fourth Proportional to 555,728.60, 766,906.22 and 301,079.78

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Solution

The fourth proportional to 555,728.60, 766,906.22 and 301,079.78 is: 415,490.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,728.60 : 766,906.22 = 301,079.78 : x
  2. Step 2: Convert to fraction form
    555,728.60/766,906.22 = 301,079.78/x
  3. Step 3: Cross multiply
    555,728.60x = 766,906.22 × 301,079.78
  4. Step 4: Simplify right side
    555,728.60x = 230,899,956,410.10
  5. Step 5: Solve for x
    x = 230,899,956,410.10/555,728.60
  6. Step 6: Final answer
    x = 415,490.51

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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.