Home / 687,523.94-1,031,313.55-327,509.72

Finding the Fourth Proportional to 687,523.94, 1,031,313.55 and 327,509.72

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Solution

The fourth proportional to 687,523.94, 1,031,313.55 and 327,509.72 is: 491,277.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,523.94 : 1,031,313.55 = 327,509.72 : x
  2. Step 2: Convert to fraction form
    687,523.94/1,031,313.55 = 327,509.72/x
  3. Step 3: Cross multiply
    687,523.94x = 1,031,313.55 × 327,509.72
  4. Step 4: Simplify right side
    687,523.94x = 337,765,211,992.71
  5. Step 5: Solve for x
    x = 337,765,211,992.71/687,523.94
  6. Step 6: Final answer
    x = 491,277.75

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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.