Home / 644,136.10-966,204.15-455,179.30

Finding the Fourth Proportional to 644,136.10, 966,204.15 and 455,179.30

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Solution

The fourth proportional to 644,136.10, 966,204.15 and 455,179.30 is: 682,768.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,136.10 : 966,204.15 = 455,179.30 : x
  2. Step 2: Convert to fraction form
    644,136.10/966,204.15 = 455,179.30/x
  3. Step 3: Cross multiply
    644,136.10x = 966,204.15 × 455,179.30
  4. Step 4: Simplify right side
    644,136.10x = 439,796,128,654.10
  5. Step 5: Solve for x
    x = 439,796,128,654.10/644,136.10
  6. Step 6: Final answer
    x = 682,768.95

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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.