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Finding the Fourth Proportional to 555,440.92, 766,507.30 and 300,791.32

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Solution

The fourth proportional to 555,440.92, 766,507.30 and 300,791.32 is: 415,091.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,440.92 : 766,507.30 = 300,791.32 : x
  2. Step 2: Convert to fraction form
    555,440.92/766,507.30 = 300,791.32/x
  3. Step 3: Cross multiply
    555,440.92x = 766,507.30 × 300,791.32
  4. Step 4: Simplify right side
    555,440.92x = 230,558,742,556.64
  5. Step 5: Solve for x
    x = 230,558,742,556.64/555,440.92
  6. Step 6: Final answer
    x = 415,091.39

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1.5x scale

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.