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Finding the Fourth Proportional to 518,051.81, 775,642.86 and 264,786.88

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Solution

The fourth proportional to 518,051.81, 775,642.86 and 264,786.88 is: 396,446.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,051.81 : 775,642.86 = 264,786.88 : x
  2. Step 2: Convert to fraction form
    518,051.81/775,642.86 = 264,786.88/x
  3. Step 3: Cross multiply
    518,051.81x = 775,642.86 × 264,786.88
  4. Step 4: Simplify right side
    518,051.81x = 205,380,052,893.68
  5. Step 5: Solve for x
    x = 205,380,052,893.68/518,051.81
  6. Step 6: Final answer
    x = 396,446.94

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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.