Home / 861,731.31-1,293,187.56-300,765.81

Finding the Fourth Proportional to 861,731.31, 1,293,187.56 and 300,765.81

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Solution

The fourth proportional to 861,731.31, 1,293,187.56 and 300,765.81 is: 451,354.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,731.31 : 1,293,187.56 = 300,765.81 : x
  2. Step 2: Convert to fraction form
    861,731.31/1,293,187.56 = 300,765.81/x
  3. Step 3: Cross multiply
    861,731.31x = 1,293,187.56 × 300,765.81
  4. Step 4: Simplify right side
    861,731.31x = 388,946,603,965.32
  5. Step 5: Solve for x
    x = 388,946,603,965.32/861,731.31
  6. Step 6: Final answer
    x = 451,354.85

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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.