Home / 859,857.81-1,289,799.48-327,408.36

Finding the Fourth Proportional to 859,857.81, 1,289,799.48 and 327,408.36

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Solution

The fourth proportional to 859,857.81, 1,289,799.48 and 327,408.36 is: 491,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,857.81 : 1,289,799.48 = 327,408.36 : x
  2. Step 2: Convert to fraction form
    859,857.81/1,289,799.48 = 327,408.36/x
  3. Step 3: Cross multiply
    859,857.81x = 1,289,799.48 × 327,408.36
  4. Step 4: Simplify right side
    859,857.81x = 422,291,132,475.65
  5. Step 5: Solve for x
    x = 422,291,132,475.65/859,857.81
  6. Step 6: Final answer
    x = 491,117.40

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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.