Home / 687,735.40-1,031,979.66-267,027.88

Finding the Fourth Proportional to 687,735.40, 1,031,979.66 and 267,027.88

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Solution

The fourth proportional to 687,735.40, 1,031,979.66 and 267,027.88 is: 400,688.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,735.40 : 1,031,979.66 = 267,027.88 : x
  2. Step 2: Convert to fraction form
    687,735.40/1,031,979.66 = 267,027.88/x
  3. Step 3: Cross multiply
    687,735.40x = 1,031,979.66 × 267,027.88
  4. Step 4: Simplify right side
    687,735.40x = 275,567,340,812.92
  5. Step 5: Solve for x
    x = 275,567,340,812.92/687,735.40
  6. Step 6: Final answer
    x = 400,688.03

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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.