Home / 687,509.11-1,031,291.63-327,494.89

Finding the Fourth Proportional to 687,509.11, 1,031,291.63 and 327,494.89

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Solution

The fourth proportional to 687,509.11, 1,031,291.63 and 327,494.89 is: 491,255.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,509.11 : 1,031,291.63 = 327,494.89 : x
  2. Step 2: Convert to fraction form
    687,509.11/1,031,291.63 = 327,494.89/x
  3. Step 3: Cross multiply
    687,509.11x = 1,031,291.63 × 327,494.89
  4. Step 4: Simplify right side
    687,509.11x = 337,742,738,924.77
  5. Step 5: Solve for x
    x = 337,742,738,924.77/687,509.11
  6. Step 6: Final answer
    x = 491,255.66

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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.