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Finding the Fourth Proportional to 555,783.72, 766,978.92 and 301,134.84

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Solution

The fourth proportional to 555,783.72, 766,978.92 and 301,134.84 is: 415,564.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,783.72 : 766,978.92 = 301,134.84 : x
  2. Step 2: Convert to fraction form
    555,783.72/766,978.92 = 301,134.84/x
  3. Step 3: Cross multiply
    555,783.72x = 766,978.92 × 301,134.84
  4. Step 4: Simplify right side
    555,783.72x = 230,964,074,357.57
  5. Step 5: Solve for x
    x = 230,964,074,357.57/555,783.72
  6. Step 6: Final answer
    x = 415,564.66

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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.