Home / 641,650.05-962,085.33-321,429.51

Finding the Fourth Proportional to 641,650.05, 962,085.33 and 321,429.51

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Solution

The fourth proportional to 641,650.05, 962,085.33 and 321,429.51 is: 481,949.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,650.05 : 962,085.33 = 321,429.51 : x
  2. Step 2: Convert to fraction form
    641,650.05/962,085.33 = 321,429.51/x
  3. Step 3: Cross multiply
    641,650.05x = 962,085.33 × 321,429.51
  4. Step 4: Simplify right side
    641,650.05x = 309,242,616,200.09
  5. Step 5: Solve for x
    x = 309,242,616,200.09/641,650.05
  6. Step 6: Final answer
    x = 481,949.03

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Half scale
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Double scale
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Similar ratio
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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.