Home / 686,830.92-1,028,841.22-321,569.11

Finding the Fourth Proportional to 686,830.92, 1,028,841.22 and 321,569.11

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Solution

The fourth proportional to 686,830.92, 1,028,841.22 and 321,569.11 is: 481,695.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,830.92 : 1,028,841.22 = 321,569.11 : x
  2. Step 2: Convert to fraction form
    686,830.92/1,028,841.22 = 321,569.11/x
  3. Step 3: Cross multiply
    686,830.92x = 1,028,841.22 × 321,569.11
  4. Step 4: Simplify right side
    686,830.92x = 330,843,555,446.71
  5. Step 5: Solve for x
    x = 330,843,555,446.71/686,830.92
  6. Step 6: Final answer
    x = 481,695.78

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1.5x scale

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.