Home / 853,822.05-1,280,733.08-321,462.51

Finding the Fourth Proportional to 853,822.05, 1,280,733.08 and 321,462.51

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Solution

The fourth proportional to 853,822.05, 1,280,733.08 and 321,462.51 is: 482,193.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,822.05 : 1,280,733.08 = 321,462.51 : x
  2. Step 2: Convert to fraction form
    853,822.05/1,280,733.08 = 321,462.51/x
  3. Step 3: Cross multiply
    853,822.05x = 1,280,733.08 × 321,462.51
  4. Step 4: Simplify right side
    853,822.05x = 411,707,668,929.52
  5. Step 5: Solve for x
    x = 411,707,668,929.52/853,822.05
  6. Step 6: Final answer
    x = 482,193.77

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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.