Home / 644,018.80-966,028.20-329,090.80

Finding the Fourth Proportional to 644,018.80, 966,028.20 and 329,090.80

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Solution

The fourth proportional to 644,018.80, 966,028.20 and 329,090.80 is: 493,636.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,018.80 : 966,028.20 = 329,090.80 : x
  2. Step 2: Convert to fraction form
    644,018.80/966,028.20 = 329,090.80/x
  3. Step 3: Cross multiply
    644,018.80x = 966,028.20 × 329,090.80
  4. Step 4: Simplify right side
    644,018.80x = 317,910,993,160.56
  5. Step 5: Solve for x
    x = 317,910,993,160.56/644,018.80
  6. Step 6: Final answer
    x = 493,636.20

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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.