Home / 641,648.05-962,082.33-321,427.51

Finding the Fourth Proportional to 641,648.05, 962,082.33 and 321,427.51

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Solution

The fourth proportional to 641,648.05, 962,082.33 and 321,427.51 is: 481,946.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,648.05 : 962,082.33 = 321,427.51 : x
  2. Step 2: Convert to fraction form
    641,648.05/962,082.33 = 321,427.51/x
  3. Step 3: Cross multiply
    641,648.05x = 962,082.33 × 321,427.51
  4. Step 4: Simplify right side
    641,648.05x = 309,239,727,746.90
  5. Step 5: Solve for x
    x = 309,239,727,746.90/641,648.05
  6. Step 6: Final answer
    x = 481,946.03

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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.