Home / 454,947.81-681,868.28-321,866.43

Finding the Fourth Proportional to 454,947.81, 681,868.28 and 321,866.43

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Solution

The fourth proportional to 454,947.81, 681,868.28 and 321,866.43 is: 482,408.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,947.81 : 681,868.28 = 321,866.43 : x
  2. Step 2: Convert to fraction form
    454,947.81/681,868.28 = 321,866.43/x
  3. Step 3: Cross multiply
    454,947.81x = 681,868.28 × 321,866.43
  4. Step 4: Simplify right side
    454,947.81x = 219,470,507,404.51
  5. Step 5: Solve for x
    x = 219,470,507,404.51/454,947.81
  6. Step 6: Final answer
    x = 482,408.10

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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.