Home / 687,785.88-1,031,883.86-328,226.68

Finding the Fourth Proportional to 687,785.88, 1,031,883.86 and 328,226.68

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Solution

The fourth proportional to 687,785.88, 1,031,883.86 and 328,226.68 is: 492,437.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,785.88 : 1,031,883.86 = 328,226.68 : x
  2. Step 2: Convert to fraction form
    687,785.88/1,031,883.86 = 328,226.68/x
  3. Step 3: Cross multiply
    687,785.88x = 1,031,883.86 × 328,226.68
  4. Step 4: Simplify right side
    687,785.88x = 338,691,813,777.53
  5. Step 5: Solve for x
    x = 338,691,813,777.53/687,785.88
  6. Step 6: Final answer
    x = 492,437.87

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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.