Home / 853,479.92-1,280,410.54-321,005.57

Finding the Fourth Proportional to 853,479.92, 1,280,410.54 and 321,005.57

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Solution

The fourth proportional to 853,479.92, 1,280,410.54 and 321,005.57 is: 481,580.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,479.92 : 1,280,410.54 = 321,005.57 : x
  2. Step 2: Convert to fraction form
    853,479.92/1,280,410.54 = 321,005.57/x
  3. Step 3: Cross multiply
    853,479.92x = 1,280,410.54 × 321,005.57
  4. Step 4: Simplify right side
    853,479.92x = 411,018,908,022.14
  5. Step 5: Solve for x
    x = 411,018,908,022.14/853,479.92
  6. Step 6: Final answer
    x = 481,580.06

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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.