Home / 751,290.46-1,036,778.79-407,135.90

Finding the Fourth Proportional to 751,290.46, 1,036,778.79 and 407,135.90

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Solution

The fourth proportional to 751,290.46, 1,036,778.79 and 407,135.90 is: 561,846.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    751,290.46 : 1,036,778.79 = 407,135.90 : x
  2. Step 2: Convert to fraction form
    751,290.46/1,036,778.79 = 407,135.90/x
  3. Step 3: Cross multiply
    751,290.46x = 1,036,778.79 × 407,135.90
  4. Step 4: Simplify right side
    751,290.46x = 422,109,865,767.56
  5. Step 5: Solve for x
    x = 422,109,865,767.56/751,290.46
  6. Step 6: Final answer
    x = 561,846.43

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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.