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Finding the Fourth Proportional to 555,412.94, 766,469.67 and 300,764.06

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Solution

The fourth proportional to 555,412.94, 766,469.67 and 300,764.06 is: 415,054.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,412.94 : 766,469.67 = 300,764.06 : x
  2. Step 2: Convert to fraction form
    555,412.94/766,469.67 = 300,764.06/x
  3. Step 3: Cross multiply
    555,412.94x = 766,469.67 × 300,764.06
  4. Step 4: Simplify right side
    555,412.94x = 230,526,529,816.06
  5. Step 5: Solve for x
    x = 230,526,529,816.06/555,412.94
  6. Step 6: Final answer
    x = 415,054.30

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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.