Home / 644,105.40-966,158.10-455,148.60

Finding the Fourth Proportional to 644,105.40, 966,158.10 and 455,148.60

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Solution

The fourth proportional to 644,105.40, 966,158.10 and 455,148.60 is: 682,722.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,105.40 : 966,158.10 = 455,148.60 : x
  2. Step 2: Convert to fraction form
    644,105.40/966,158.10 = 455,148.60/x
  3. Step 3: Cross multiply
    644,105.40x = 966,158.10 × 455,148.60
  4. Step 4: Simplify right side
    644,105.40x = 439,745,506,593.66
  5. Step 5: Solve for x
    x = 439,745,506,593.66/644,105.40
  6. Step 6: Final answer
    x = 682,722.90

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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.