Home / 644,138.10-966,207.15-455,181.30

Finding the Fourth Proportional to 644,138.10, 966,207.15 and 455,181.30

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Solution

The fourth proportional to 644,138.10, 966,207.15 and 455,181.30 is: 682,771.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,138.10 : 966,207.15 = 455,181.30 : x
  2. Step 2: Convert to fraction form
    644,138.10/966,207.15 = 455,181.30/x
  3. Step 3: Cross multiply
    644,138.10x = 966,207.15 × 455,181.30
  4. Step 4: Simplify right side
    644,138.10x = 439,799,426,606.30
  5. Step 5: Solve for x
    x = 439,799,426,606.30/644,138.10
  6. Step 6: Final answer
    x = 682,771.95

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Double scale
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Similar ratio
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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.